Wolvi
New Contributor II

Follow-Up: It seems that the wrong libraries are installed in the background. When i upload my jar and start the task other versions are displayed, i.e., locally I pack the following versions into my jar:

Log4j API version: 2.23.1
Log4j Core version: 2.23.1
SLF4J API version: 2.0.7
SLF4J to Log4j Binding version: 2.20.0
SLF4J Simple version: 2.0.0

However, when i run the task, the following is shown:

NoClassDefFoundError: org/slf4j/simple/SimpleLogger Caused by: ClassNotFoundException: org.slf4j.simple.SimpleLogger
at TestLogging.main(TestLogging.java:22)
Log4j API version: 2.20.0
Log4j Core version: 2.20.0
SLF4J API version: 2.0.7
SLF4J to Log4j Binding version: 1.7.25
 
It seems that in the background other libraries are loaded, which could be a problem as Slf4j to log4j has a version potentially not compatible with the other libraries.