I have tried different combinations, like this: Probably I'm too stupid to understand, but this guide doesn't helped me fix problem and build fat jar. (assembly) deduplicate: different file contents found in the following: at .runWorker(ThreadPoolExecutor.java:1149) at $RunnableAdapter.call(Executors.java:511) at sbt.CompletionService$$anon$2.call(CompletionService.scala:37) at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:178) at sbt.Execute.$anonfun$submit$1(Execute.scala:281) at $.wideConvert(ErrorHandling.scala:19) at sbt.Execute.$anonfun$submit$2(Execute.scala:281) at .$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62) at scala.Function1.$anonfun$compose$1(Function1.scala:49)
at sbtassembly.Assembly$.$anonfun$assemblyTask$1(Assembly.scala:244) at sbtassembly.Assembly$.apply(Assembly.scala:85) at sbtassembly.Assembly$.inputs$1(Assembly.scala:58) at sbtassembly.Assembly$.inputs$lzycompute$1(Assembly.scala:68) at sbtassembly.Assembly$.stratMapping$1(Assembly.scala:23) at sbtassembly.Assembly$.stratMapping$lzycompute$1(Assembly.scala:23) at sbtassembly.Assembly$.x$1$1(Assembly.scala:23) at sbtassembly.Assembly$.x$1$lzycompute$1(Assembly.scala:25) at sbtassembly.Assembly$.applyStrategies(Assembly.scala:143) Users/mkostromin/Library/Caches/Coursier/v1/https//maven2/com/fasterxml/jackson/module/jackson-module-paranamer/2.10.3/jackson-module-paranamer-2.10.3.jar:module-info.class Users/mkostromin/Library/Caches/Coursier/v1/https//maven2/com/fasterxml/jackson/module/jackson-module-parameter-names/2.10.3/jackson-module-parameter-names-2.10.3.jar:module-info.class Users/mkostromin/Library/Caches/Coursier/v1/https//maven2/com/fasterxml/jackson/datatype/jackson-datatype-jsr310/2.10.3/jackson-datatype-jsr310-2.10.3.jar:module-info.class Users/mkostromin/Library/Caches/Coursier/v1/https//maven2/com/fasterxml/jackson/datatype/jackson-datatype-jdk8/2.10.3/jackson-datatype-jdk8-2.10.3.jar:module-info.class Users/mkostromin/Library/Caches/Coursier/v1/https//maven2/com/fasterxml/jackson/dataformat/jackson-dataformat-cbor/2.10.3/jackson-dataformat-cbor-2.10.3.jar:module-info.class Users/mkostromin/Library/Caches/Coursier/v1/https//maven2/com/fasterxml/jackson/core/jackson-databind/2.10.3/jackson-databind-2.10.3.jar:module-info.class Users/mkostromin/Library/Caches/Coursier/v1/https//maven2/com/fasterxml/jackson/core/jackson-core/2.10.3/jackson-core-2.10.3.jar:module-info.class Users/mkostromin/Library/Caches/Coursier/v1/https//maven2/com/fasterxml/jackson/core/jackson-annotations/2.10.3/jackson-annotations-2.10.3.jar:module-info.class : deduplicate: different file contents found in the following: