fix: fix for logging

gemeinsamforschen/pom.xml

@@ -29,16 +29,16 @@
 
 
     <dependencies>
-       <!-- <dependency>
+        <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-slf4j-impl</artifactId>
-            <version>2.11.0</version>
+            <version>2.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-slf4j-impl</artifactId>
-            <version>2.11.0</version>
-        </dependency>-->
+            <artifactId>log4j-core</artifactId>
+            <version>2.0</version>
+        </dependency>
 
         <!-- https://mvnrepository.com/artifact/javax.servlet.jsp/jsp-api -->
         <dependency>