first build issue: Building webanno-io-tsv, caused by slf4j-log4j12 (the very old log4j).
I see the webanno pom has two "excludes" for slf4j-log4j12. But running dependency:tree on webanno-io-tsv shows ...dkpro.core:...testing-asl has this dependency. May I exclude it? More details below: test failure, Caused by: java.lang.IllegalStateException: Detected both log4j-over-slf4j.jar AND bound slf4j-log4j12.jar on the class path, preempting StackOverflowError. See also http://www.slf4j.org/codes.html#log4jDelegationLoop for more details. at de.tudarmstadt.ukp.clarin.webanno.tsv.internal.tsv3x.Tsv3XSchemaAnalyzerTest.testAnalyze(Tsv3XSchemaAnalyzerTest.java:33) The manual for slf4j says: log4j-over-slf4j.jar and slf4j-log4j12.jar cannot be present simultaneously The presence of /slf4j-log4j12.jar/, that is the log4j binding for SLF4J, will force all SLF4J calls to be delegated to log4j. The presence of /log4j-over-slf4j.jar/ will in turn delegate all log4j API calls to their SLF4J equivalents. If both are present simultaneously, slf4j calls will be delegated to log4j, and log4j calls redirected to SLF4j, resulting in an endless loop <https://www.slf4j.org/codes.html#log4jDelegationLoop>.
