Corrected dependency

kieker-trace-diagnosis-application/pom.xml

@@ -33,6 +33,10 @@
 			<groupId>com.google.inject</groupId>
 			<artifactId>guice</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.apache.logging.log4j</groupId>
+			<artifactId>log4j-api</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.apache.logging.log4j</groupId>
 			<artifactId>log4j-core</artifactId>