Caused by: java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory · Issue #4025 · spring-projects/spring-boot · GitHub
java.util.ServiceConfigurationError: not a subtype when using log4j2 2.9.x · Issue #861 · powermock/powermock · GitHub
powermock throws loader constraint violation error:when resolving method " org.apache.log4j.LogManager.getLogger · Issue #535 · vijayjcp/powermock · GitHub
![java.lang.ClassCastException: org.apache.logging.slf4j.SLF4JLoggerContext cannot be cast to org.apache.logging.log4j.core.LoggerContext - Stack Overflow java.lang.ClassCastException: org.apache.logging.slf4j.SLF4JLoggerContext cannot be cast to org.apache.logging.log4j.core.LoggerContext - Stack Overflow](https://i.stack.imgur.com/DAfgN.png)
java.lang.ClassCastException: org.apache.logging.slf4j.SLF4JLoggerContext cannot be cast to org.apache.logging.log4j.core.LoggerContext - Stack Overflow
Cannot use jboss-as:run with Jboss as 7.0.2.Final · Issue #40 · jbossas/ jboss-as-maven-plugin · GitHub
![Development Guide JBoss Enterprise Application Platform Continuous Delivery 17 | Red Hat Customer Portal Development Guide JBoss Enterprise Application Platform Continuous Delivery 17 | Red Hat Customer Portal](https://access.redhat.com/webassets/avalon/d/JBoss_Enterprise_Application_Platform_Continuous_Delivery-17-Development_Guide-en-US/images/35dffcc751f8f37101f6f49fe279c198/4713.png)