Logstash when started using nohup, it is logging too much resulting in huge size

Elastic Stack Logstash
5

I tried adding

logger.logstash.file.outputs = WARN

and

"logger.filewatch.discoverer" : "TRACE",
    "logger.filewatch.observingtail" : "TRACE",
    "logger.filewatch.sincedbcollection" : "TRACE",
    "logger.filewatch.tailmode.handlers.createinitial" : "TRACE",
    "logger.filewatch.tailmode.handlers.grow" : "TRACE",
    "logger.filewatch.tailmode.processor" : "TRACE"

But both giving me error by either saying logstash file output is not valid or filewatch module not found.