by Indrek Ots

• articles

### Tags

• tomcat
• java
• error
• logging
• apache
• catalina

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When starting up Tomcat I’m sure at one point in time you’ve encountered a ‘SEVERE: Error listenerStart’ message. This is caused by an application you have deployed. But what’s the exact cause of this error?

Create logging.propertiesto WEB-INF/classes/ with the following content:

Now restart Tomcat and you should see a stacktrace about what went wrong in catalina.out.