Error mapping logstash

Hi, I get the following error when logstash is sending data to ES
2016-08-31 17:38:53,439][DEBUG][action.admin.indices.create] [dewrmon01] [logstash-2016.08.31] failed to create
MapperParsingException[Failed to parse mapping [default]: Mapping definition for [@fields] has unsupported parameters: [path : full]]; nested: MapperParsingException[Mapping definition for [@fields] has unsupported parameters: [path : full]];
at org.elasticsearch.index.mapper.MapperService.merge(MapperService.java:280)
at org.elasticsearch.cluster.metadata.MetaDataCreateIndexService$1.execute(MetaDataCreateIndexService.java:317)
at org.elasticsearch.cluster.ClusterStateUpdateTask.execute(ClusterStateUpdateTask.java:45)
at org.elasticsearch.cluster.service.InternalClusterService.runTasksForExecutor(InternalClusterService.java:468)
at org.elasticsearch.cluster.service.InternalClusterService$UpdateTask.run(InternalClusterService.java:772)
at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.runAndClean(PrioritizedEsThreadPoolExecutor.java:231)
at org.elasticsearch.common.util.concurrent.PrioritizedEsThreadPoolExecutor$TieBreakingPrioritizedRunnable.run(PrioritizedEsThreadPoolExecutor.java:194)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: MapperParsingException[Mapping definition for [@fields] has unsupported parameters: [path : full]]
at org.elasticsearch.index.mapper.DocumentMapperParser.checkNoRemainingFields(DocumentMapperParser.java:171)
at org.elasticsearch.index.mapper.DocumentMapperParser.checkNoRemainingFields(DocumentMapperParser.java:165)
at org.elasticsearch.index.mapper.object.ObjectMapper$TypeParser.parseProperties(ObjectMapper.java:311)
at org.elasticsearch.index.mapper.object.ObjectMapper$TypeParser.parseObjectOrDocumentTypeProperties(ObjectMapper.java:222)
at org.elasticsearch.index.mapper.object.RootObjectMapper$TypeParser.parse(RootObjectMapper.java:139)
at org.elasticsearch.index.mapper.DocumentMapperParser.parse(DocumentMapperParser.java:118)
at org.elasticsearch.index.mapper.DocumentMapperParser.parse(DocumentMapperParser.java:99)
at org.elasticsearch.index.mapper.DocumentMapperParser.parse(DocumentMapperParser.java:85)
at org.elasticsearch.index.mapper.MapperService.merge(MapperService.java:300)
at org.elasticsearch.index.mapper.MapperService.merge(MapperService.java:278)
Do you have an idea - I'm a beginner

What does the mapping for the index look like?