OpenL Tablets - Troubleshooting Guide

Version: 6.0.0-SNAPSHOT Last Updated: 2025-11-06

Quick Diagnostics
Installation Issues
Build Issues
Runtime Issues
Performance Issues
Database Issues
Rule Compilation Issues
Deployment Issues
Docker Issues
Kubernetes Issues
Security Issues
UI Issues
Getting Help

Quick Diagnostics

Health Check Commands

# Check if service is running
curl http://localhost:8080/actuator/health

# Check database connectivity
curl http://localhost:8080/actuator/health/db

# Check disk space
curl http://localhost:8080/actuator/health/diskSpace

# View all health indicators
curl http://localhost:8080/actuator/health | jq

Log Locations

Component	Log Location
OpenL Studio	`logs/webstudio.log` under the servlet container base (`$CATALINA_BASE` for Tomcat, `$JETTY_BASE` for Jetty)
Rule Service	`logs/ruleservice.log` under the servlet container base (`$CATALINA_BASE` for Tomcat, `$JETTY_BASE` for Jetty)
Docker Container	`docker logs <container-id>`
Kubernetes Pod	`kubectl logs <pod-name> -n openl-tablets`

Quick Log Analysis

# View last 100 lines
tail -n 100 $CATALINA_BASE/logs/webstudio.log

# Follow logs in real-time
tail -f $CATALINA_BASE/logs/webstudio.log

# Search for errors
grep -i "error" $CATALINA_BASE/logs/webstudio.log

# Search for exceptions
grep -A 10 "Exception" $CATALINA_BASE/logs/webstudio.log

# Count errors by type
grep "ERROR" $CATALINA_BASE/logs/webstudio.log | cut -d' ' -f5 | sort | uniq -c | sort -rn

Installation Issues

Issue: JDK Not Found

Symptoms:

Error: JAVA_HOME is not defined correctly

Solutions:

# 1. Check if Java is installed
java -version

# 2. Find Java installation
which java
readlink -f $(which java)

# 3. Set JAVA_HOME (Linux/Mac)
export JAVA_HOME=/usr/lib/jvm/java-21-openjdk
export PATH=$JAVA_HOME/bin:$PATH

# 4. Set JAVA_HOME (Windows)
setx JAVA_HOME "C:\Program Files\Java\jdk-21"
setx PATH "%JAVA_HOME%\bin;%PATH%"

# 5. Verify
echo $JAVA_HOME
java -version

Issue: Maven Command Not Found

Symptoms:

bash: mvn: command not found

Solutions:

# 1. Install Maven (Ubuntu/Debian)
sudo apt update
sudo apt install maven

# 2. Install Maven (Mac)
brew install maven

# 3. Install Maven (Manual)
wget https://dlcdn.apache.org/maven/maven-3/3.9.9/binaries/apache-maven-3.9.9-bin.tar.gz
tar -xzf apache-maven-3.9.9-bin.tar.gz
sudo mv apache-maven-3.9.9 /opt/
export M2_HOME=/opt/apache-maven-3.9.9
export PATH=$M2_HOME/bin:$PATH

# 4. Verify
mvn -version

Issue: Permission Denied

Symptoms:

Permission denied: /opt/openl

Solutions:

# 1. Change ownership
sudo chown -R $USER:$USER /opt/openl

# 2. Or use sudo
sudo mvn clean install

# 3. Or change installation directory
mvn clean install -DinstallDir=$HOME/openl

Build Issues

Issue: Build Fails with “Out of Memory”

Symptoms:

OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: GC overhead limit exceeded

Solutions:

# 1. Increase Maven memory
export MAVEN_OPTS="-Xmx4g -XX:MaxPermSize=512m"

# 2. Or set in .mavenrc
echo "MAVEN_OPTS=-Xmx4g" > ~/.mavenrc

# 3. Build with limited parallelism
mvn clean install -T1

# 4. Skip tests to reduce memory usage
mvn clean install -DskipTests

Issue: Test Failures

Symptoms:

Tests run: 150, Failures: 3, Errors: 0, Skipped: 0

Solutions:

# 1. Run specific failed test
mvn test -Dtest=MyFailingTest

# 2. Run with verbose output
mvn test -X -Dtest=MyFailingTest

# 3. Skip tests temporarily
mvn clean install -DskipTests

# 4. Skip only failing tests (not recommended for long-term)
mvn clean install -Dmaven.test.failure.ignore=true

# 5. Update test dependencies
mvn clean install -U

Issue: Docker Build Fails

Symptoms:

Cannot connect to the Docker daemon

Solutions:

# 1. Check Docker is running
docker ps

# 2. Start Docker service (Linux)
sudo systemctl start docker

# 3. Start Docker Desktop (Mac/Windows)
open -a Docker

# 4. Check Docker permissions (Linux)
sudo usermod -aG docker $USER
# Log out and log back in

# 5. Skip Docker tests
mvn clean install -DnoDocker

Issue: Dependency Resolution Failures

Symptoms:

Could not resolve dependencies for project org.openl:...

Solutions:

# 1. Force update dependencies
mvn clean install -U

# 2. Clear local Maven repository
rm -rf ~/.m2/repository/org/openl
mvn clean install

# 3. Use Maven central explicitly
mvn clean install -DdownloadSources -DdownloadJavadocs

# 4. Check Maven settings.xml
cat ~/.m2/settings.xml

# 5. Try with offline mode disabled
mvn clean install --no-transfer-progress

Runtime Issues

Issue: Application Won’t Start

Symptoms:

Application startup failed
Port 8080 already in use

Solutions:

# 1. Check if port is in use
lsof -i :8080
netstat -an | grep 8080

# 2. Kill process using the port
kill -9 $(lsof -t -i:8080)

# 3. Use different port
java -jar studio.war --server.port=8081

# 4. Check logs for actual error
tail -f logs/spring.log

# 5. Verify database connectivity
telnet localhost 5432  # PostgreSQL
telnet localhost 3306  # MySQL

Issue: Out of Memory at Runtime

Symptoms:

java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Metaspace

Solutions:

# 1. Increase heap size
java -Xms2g -Xmx4g -jar studio.war

# 2. Increase metaspace
java -XX:MetaspaceSize=256m -XX:MaxMetaspaceSize=512m -jar studio.war

# 3. Enable heap dumps for analysis
java -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/tmp/heapdump.hprof -jar studio.war

# 4. Analyze heap dump
jhat /tmp/heapdump.hprof
# Or use Eclipse Memory Analyzer (MAT)

# 5. Monitor memory usage
jstat -gc <pid> 1000

Memory Configuration for Different Scenarios:

Scenario	Heap Size	Metaspace	GC
Development	-Xmx2g	-XX:MaxMetaspaceSize=256m	-XX:+UseG1GC
Production (Small)	-Xmx4g	-XX:MaxMetaspaceSize=512m	-XX:+UseG1GC
Production (Large)	-Xmx8g	-XX:MaxMetaspaceSize=1g	-XX:+UseG1GC -XX:MaxGCPauseMillis=200

Issue: Slow Response Times

Symptoms:

API responses take > 5 seconds
UI freezes or hangs

Diagnostics:

# 1. Check CPU usage
top
htop

# 2. Check thread dump
jstack <pid> > thread-dump.txt

# 3. Enable GC logging
java -Xlog:gc*:file=gc.log -jar studio.war

# 4. Profile with JFR
java -XX:StartFlightRecording=duration=60s,filename=recording.jfr -jar studio.war

# 5. Check database queries
# Enable SQL logging in application.properties
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.format_sql=true
logging.level.org.hibernate.type.descriptor.sql.BasicBinder=TRACE

Solutions:

# application.properties

# 1. Enable caching
spring.cache.type=caffeine
spring.cache.caffeine.spec=maximumSize=10000,expireAfterWrite=3600s

# 2. Optimize database connection pool
spring.datasource.hikari.maximum-pool-size=20
spring.datasource.hikari.minimum-idle=5

# 3. Enable compression
server.compression.enabled=true

# 4. Increase thread pool
server.tomcat.threads.max=200

Issue: Connection Pool Exhausted

Symptoms:

Connection is not available, request timed out after 30000ms

Solutions:

# 1. Increase pool size
spring.datasource.hikari.maximum-pool-size=50

# 2. Reduce connection timeout
spring.datasource.hikari.connection-timeout=20000

# 3. Enable connection leak detection
spring.datasource.hikari.leak-detection-threshold=60000

# 4. Log pool stats
logging.level.com.zaxxer.hikari.HikariConfig=DEBUG
logging.level.com.zaxxer.hikari=TRACE

Performance Issues

Issue: High GC Overhead

Symptoms:

java.lang.OutOfMemoryError: GC overhead limit exceeded

Diagnostics:

# 1. Monitor GC activity
jstat -gcutil <pid> 1000

# 2. Enable detailed GC logging
java -Xlog:gc*=debug:file=gc-debug.log:time,uptime,level,tags -jar studio.war

# 3. Analyze GC logs
# Use GCViewer or GCEasy.io

Solutions:

# 1. Switch to G1GC (recommended)
java -XX:+UseG1GC \
     -XX:MaxGCPauseMillis=200 \
     -XX:G1HeapRegionSize=16m \
     -jar studio.war

# 2. Tune G1GC
java -XX:+UseG1GC \
     -XX:MaxGCPauseMillis=200 \
     -XX:InitiatingHeapOccupancyPercent=45 \
     -XX:G1ReservePercent=10 \
     -jar studio.war

# 3. Enable string deduplication
java -XX:+UseG1GC -XX:+UseStringDeduplication -jar studio.war

Issue: High CPU Usage

Diagnostics:

# 1. Identify hot threads
top -H -p <pid>

# 2. Thread dump
jstack <pid> > thread-dump-1.txt
sleep 5
jstack <pid> > thread-dump-2.txt

# 3. Compare thread dumps
diff thread-dump-1.txt thread-dump-2.txt

# 4. CPU profiling
perf record -g -p <pid>
perf report

Solutions:

Optimize rules: Review and optimize decision tables
Add caching: Cache frequently executed rules
Limit parallelism: Reduce concurrent compilation threads
Database optimization: Add indexes, optimize queries

Issue: Memory Leaks

Diagnostics:

# 1. Monitor heap usage over time
jstat -gc <pid> 10000

# 2. Take heap dumps at intervals
jmap -dump:format=b,file=heap1.bin <pid>
# Wait 1 hour
jmap -dump:format=b,file=heap2.bin <pid>

# 3. Compare heap dumps in Eclipse MAT
# Look for growing collections, leaked objects

# 4. Use VisualVM or JProfiler for live monitoring

Common Causes:

Unclosed database connections
Static collections that grow unbounded
ThreadLocal variables not cleaned up
Event listeners not unregistered

Solutions:

// Example: Clean up ThreadLocal
private static final ThreadLocal<Context> contextHolder =
    ThreadLocal.withInitial(Context::new);

@Override
public void destroy() {
    contextHolder.remove();  // Clean up!
}

Database Issues

Issue: Cannot Connect to Database

Symptoms:

Connection refused
Communications link failure

Diagnostics:

# 1. Check database is running
# PostgreSQL
sudo systemctl status postgresql
ps aux | grep postgres

# MySQL
sudo systemctl status mysql
ps aux | grep mysql

# 2. Test connection
psql -h localhost -U openl -d openl_prod  # PostgreSQL
mysql -h localhost -u openl -p openl_prod  # MySQL

# 3. Check port
netstat -an | grep 5432  # PostgreSQL
netstat -an | grep 3306  # MySQL

# 4. Check firewall
sudo ufw status
sudo iptables -L

Solutions:

# 1. Start database
sudo systemctl start postgresql
sudo systemctl start mysql

# 2. Check PostgreSQL pg_hba.conf
sudo nano /etc/postgresql/16/main/pg_hba.conf
# Add: host all all 0.0.0.0/0 md5

# 3. Check MySQL bind-address
sudo nano /etc/mysql/mysql.conf.d/mysqld.cnf
# Set: bind-address = 0.0.0.0

# 4. Restart database
sudo systemctl restart postgresql
sudo systemctl restart mysql

# 5. Verify connection string
# PostgreSQL
jdbc:postgresql://localhost:5432/openl_prod

# MySQL
jdbc:mysql://localhost:3306/openl_prod?useSSL=false

Issue: Liquibase Migration Failures

Symptoms:

Liquibase failed to start
Validation Failed: 1 change sets check sum

Solutions:

# 1. Clear Liquibase checksums
# Connect to database
psql -U openl openl_prod

# Clear checksums
UPDATE databasechangelog SET md5sum = NULL;

# 2. Force update
spring.liquibase.drop-first=true  # DANGER: Drops all tables!

# 3. Skip Liquibase (temporary)
spring.liquibase.enabled=false

# 4. Manual migration
psql -U openl openl_prod < migration.sql

Issue: Database Deadlocks

Symptoms:

Deadlock detected
Transaction was deadlocked

Diagnostics:

-- PostgreSQL: View active locks
SELECT * FROM pg_locks WHERE NOT granted;

-- PostgreSQL: View blocking queries
SELECT blocked_locks.pid AS blocked_pid,
       blocked_activity.usename  AS blocked_user,
       blocking_locks.pid AS blocking_pid,
       blocking_activity.usename AS blocking_user,
       blocked_activity.query AS blocked_statement,
       blocking_activity.query AS blocking_statement
FROM pg_catalog.pg_locks blocked_locks
JOIN pg_catalog.pg_stat_activity blocked_activity ON blocked_activity.pid = blocked_locks.pid
JOIN pg_catalog.pg_locks blocking_locks
    ON blocking_locks.locktype = blocked_locks.locktype
    AND blocking_locks.database IS NOT DISTINCT FROM blocked_locks.database
JOIN pg_catalog.pg_stat_activity blocking_activity ON blocking_activity.pid = blocking_locks.pid
WHERE NOT blocked_locks.granted;

-- MySQL: View running transactions
SELECT * FROM information_schema.INNODB_TRX;

-- MySQL: View locks
SELECT * FROM information_schema.INNODB_LOCKS;

Solutions:

# 1. Reduce transaction scope
spring.jpa.properties.hibernate.jdbc.batch_size=20
spring.jpa.properties.hibernate.order_inserts=true
spring.jpa.properties.hibernate.order_updates=true

# 2. Set isolation level
spring.jpa.properties.hibernate.connection.isolation=2  # READ_COMMITTED

# 3. Add timeouts
spring.datasource.hikari.connection-timeout=30000
spring.jpa.properties.javax.persistence.lock.timeout=10000

Rule Compilation Issues

Issue: Excel File Cannot Be Parsed

Symptoms:

Error parsing Excel file
Invalid table format
Unsupported file format

Solutions:

Verify Excel file format:
- Use .xls (Excel 97-2003) or .xlsx (Excel 2007+)
- Avoid .xlsm (macro-enabled) files in production
- Check file is not corrupted

Check Excel compatibility:

# Verify file with Apache POI
java -cp poi-5.3.0.jar org.apache.poi.ss.util.ExcelExtractor myfile.xlsx

Common Excel issues:
- Hidden sheets or columns
- Merged cells in table headers
- Formula errors (#REF!, #VALUE!)
- Special characters in sheet names

Debug parsing:

logging.level.org.openl.rules.table=DEBUG
logging.level.org.openl.rules.lang.xls=DEBUG

Issue: Type Resolution Errors

Symptoms:

Cannot resolve type 'MyType'
Type mismatch: expected String, found Integer

Solutions:

Check datatype definitions:
- Ensure datatype tables are defined before use
- Check spelling and case sensitivity
- Verify all required properties are defined

Import required types:

// In Excel, add Environment table
Environment
dependency = path/to/datatypes.xlsx

Enable type debugging:

logging.level.org.openl.binding=DEBUG
logging.level.org.openl.types=DEBUG

Issue: Method Not Found

Symptoms:

Method 'calculatePremium' not found
Cannot find method matching signature

Solutions:

Check method signature:
- Parameter types must match exactly
- Parameter order matters
- Check for typos in method name

Verify table name:

Method String calculatePremium(Driver driver, Vehicle vehicle)

Check visibility:
- Method table must not be private
- Ensure method is in active module

Deployment Issues

Issue: WAR File Deploy Fails

Symptoms:

Failed to deploy application
Context initialization failed

Solutions:

# 1. Check WAR file integrity
jar -tf studio.war | head
unzip -t studio.war

# 2. Check application server logs
tail -f $TOMCAT_HOME/logs/catalina.out
tail -f $JBOSS_HOME/standalone/log/server.log

# 3. Increase deployment timeout (Tomcat)
# Edit $TOMCAT_HOME/conf/server.xml
<Connector port="8080"
           connectionTimeout="60000"
           .../>

# 4. Verify JAVA_HOME
echo $JAVA_HOME

Issue: Hot Reload Not Working

Symptoms:

Rule changes don’t take effect
Must restart server for changes

Solutions:

# 1. Enable hot reload
ruleservice.deploy.hot.reload=true
ruleservice.deploy.watch.interval=5000

# 2. Check file system watcher
logging.level.org.openl.rules.ruleservice.publish=DEBUG

# 3. Manual reload via API
curl -X POST http://localhost:8080/admin/reload

# 4. Clear cache
curl -X POST http://localhost:8080/admin/cache/clear

Docker Issues

Issue: Container Exits Immediately

Symptoms:

docker ps -a
# Container status: Exited (1)

Diagnostics:

# 1. View container logs
docker logs <container-id>

# 2. Run with interactive shell
docker run -it openltablets/webstudio:latest /bin/sh

# 3. Check entrypoint
docker inspect openltablets/webstudio:latest | grep -A 5 Entrypoint

Solutions:

# 1. Override entrypoint for debugging
docker run -it --entrypoint /bin/bash openltablets/webstudio:latest

# 2. Check environment variables
docker run --rm openltablets/webstudio:latest env

# 3. Follow the logs: the container writes them to stdout (see LOGGING_FORMAT=ecs|otel|plain|none)
docker logs -f <container-id>

Issue: Docker Network Issues

Symptoms:

Containers cannot communicate
Cannot connect to database container

Solutions:

# 1. Check network
docker network ls
docker network inspect bridge

# 2. Use custom network
docker network create openl-network
docker run --network openl-network --name db postgres:16
docker run --network openl-network --name studio openltablets/webstudio:latest

# 3. Use Docker Compose
docker compose up
docker compose ps
docker compose logs

Kubernetes Issues

Issue: Pod CrashLoopBackOff

Symptoms:

kubectl get pods
# STATUS: CrashLoopBackOff

Diagnostics:

# 1. View pod logs
kubectl logs <pod-name> -n openl-tablets

# 2. View previous container logs
kubectl logs <pod-name> --previous -n openl-tablets

# 3. Describe pod
kubectl describe pod <pod-name> -n openl-tablets

# 4. Get events
kubectl get events -n openl-tablets --sort-by='.lastTimestamp'

Solutions:

# 1. Adjust liveness/readiness probes
livenessProbe:
  httpGet:
    path: /actuator/health/liveness
    port: 8080
  initialDelaySeconds: 90  # Increase delay
  periodSeconds: 30
  failureThreshold: 5  # Allow more failures

# 2. Increase resources
resources:
  requests:
    memory: "2Gi"  # Was 1Gi
    cpu: "1000m"   # Was 500m

Issue: ImagePullBackOff

Symptoms:

Failed to pull image
ImagePullBackOff

Solutions:

# 1. Check image exists
docker pull openltablets/webstudio:latest

# 2. Create image pull secret
kubectl create secret docker-registry regcred \
  --docker-server=docker.io \
  --docker-username=<username> \
  --docker-password=<password> \
  -n openl-tablets

# 3. Use secret in deployment
spec:
  imagePullSecrets:
  - name: regcred

# 4. Check image pull policy
imagePullPolicy: IfNotPresent  # or Always

Security Issues

Issue: Authentication Fails

Symptoms:

401 Unauthorized
Invalid credentials

Solutions:

# 1. Check credentials
curl -u admin:admin123 http://localhost:8080/api/projects

# 2. Reset password (database)
psql -U openl openl_prod
UPDATE users SET password = crypt('newpassword', gen_salt('bf')) WHERE username = 'admin';

# 3. Enable debug logging
logging.level.org.springframework.security=DEBUG

# 4. Check authentication provider
spring.security.user.name=admin
spring.security.user.password=admin123

Issue: CORS Errors

Symptoms:

Access-Control-Allow-Origin header is not present
CORS policy: No 'Access-Control-Allow-Origin' header

Solutions:

# application.properties

# 1. Enable CORS
management.endpoints.web.cors.allowed-origins=http://localhost:3000
management.endpoints.web.cors.allowed-methods=GET,POST,PUT,DELETE
management.endpoints.web.cors.allowed-headers=*

# 2. Or configure in code
@Configuration
public class CorsConfig {
    @Bean
    public WebMvcConfigurer corsConfigurer() {
        return new WebMvcConfigurer() {
            @Override
            public void addCorsMappings(CorsRegistry registry) {
                registry.addMapping("/api/**")
                    .allowedOrigins("http://localhost:3000")
                    .allowedMethods("GET", "POST", "PUT", "DELETE")
                    .allowedHeaders("*")
                    .allowCredentials(true);
            }
        };
    }
}

Issue: SSL/TLS Errors

Symptoms:

unable to find valid certification path
PKIX path building failed

Solutions:

# 1. Import certificate to Java keystore
keytool -import -trustcacerts -alias mycert \
  -file certificate.crt \
  -keystore $JAVA_HOME/lib/security/cacerts \
  -storepass changeit

# 2. Disable SSL verification (NOT for production!)
curl -k https://localhost:8443/api/projects

# 3. Use custom truststore
java -Djavax.net.ssl.trustStore=/path/to/truststore.jks \
     -Djavax.net.ssl.trustStorePassword=changeit \
     -jar studio.war

UI Issues

Issue: OpenL Studio UI Not Loading

Symptoms:

Blank page
Infinite loading spinner
Console errors

Diagnostics:

# 1. Check browser console (F12)
# Look for JavaScript errors, network errors

# 2. Check network tab
# Look for failed requests (404, 500)

# 3. Check server logs
tail -f logs/webstudio.log | grep ERROR

# 4. Clear browser cache
# Chrome: Ctrl+Shift+Delete
# Firefox: Ctrl+Shift+Delete

Solutions:

Clear browser cache
Disable browser extensions
Try incognito/private mode
Check for proxy/firewall issues
Verify server is running

Issue: React UI Build Failures

Symptoms:

npm ERR! Build failed
Module not found

Solutions:

# 1. Clean and reinstall
cd STUDIO/studio-ui
rm -rf node_modules package-lock.json
npm install

# 2. Clear npm cache
npm cache clean --force
npm install

# 3. Use specific Node version
nvm install 20
nvm use 20
npm install

# 4. Check for peer dependency issues
npm ls
npm dedupe

Getting Help

Before Asking for Help

Check logs: Review application logs for error messages
Search existing issues: GitHub Issues
Try quick fixes: Restart, clear cache, update dependencies
Gather information: Version, OS, Java version, stack trace

Information to Provide

When reporting issues, include:

**Environment**:
- OpenL Tablets Version: 6.0.0-SNAPSHOT
- Java Version: 21.0.1
- OS: Ubuntu 22.04
- Database: PostgreSQL 16
- Deployment: Docker / Kubernetes / Tomcat

**Steps to Reproduce**:
1. ...
2. ...
3. ...

**Expected Behavior**:
...

**Actual Behavior**:
...

**Logs**:

Paste relevant log excerpt here

**Additional Context**:
...

Support Channels

GitHub Issues: openl-tablets/openl-tablets/issues
GitHub Discussions: openl-tablets/openl-tablets/discussions
Documentation: docs/
Website: openl-tablets.org

Additional Resources

Still having issues? Open an issue on GitHub with detailed information about your problem.

OpenL Tablets - Troubleshooting Guide

Table of Contents

Quick Diagnostics

Health Check Commands

Log Locations

Quick Log Analysis

Installation Issues

Issue: JDK Not Found

Issue: Maven Command Not Found

Issue: Permission Denied

Build Issues

Issue: Build Fails with “Out of Memory”

Issue: Test Failures

Issue: Docker Build Fails

Issue: Dependency Resolution Failures

Runtime Issues

Issue: Application Won’t Start

Issue: Out of Memory at Runtime

Issue: Slow Response Times

Issue: Connection Pool Exhausted

Performance Issues

Issue: High GC Overhead

Issue: High CPU Usage

Issue: Memory Leaks

Database Issues

Issue: Cannot Connect to Database

Issue: Liquibase Migration Failures

Issue: Database Deadlocks

Rule Compilation Issues

Issue: Excel File Cannot Be Parsed

Issue: Type Resolution Errors

Issue: Method Not Found

Deployment Issues

Issue: WAR File Deploy Fails

Issue: Hot Reload Not Working

Docker Issues

Issue: Container Exits Immediately

Issue: Docker Network Issues

Kubernetes Issues

Issue: Pod CrashLoopBackOff

Issue: ImagePullBackOff

Security Issues

Issue: Authentication Fails

Issue: CORS Errors

Issue: SSL/TLS Errors

UI Issues

Issue: OpenL Studio UI Not Loading

Issue: React UI Build Failures

Getting Help

Before Asking for Help

Information to Provide

Support Channels

Additional Resources