I added a console setup and removed the file setup before compiling and it works.
appender.console.type = Console
appender.console.name = STDOUT
appender.console.layout.type = PatternLayout
appender.console.layout.pattern = ${log_pattern}
rootLogger.level = INFO
rootLogger.appenderRef.stdout.ref = STDOUT
logger.cfIdentity.name = org.cloudfoundry.identity
logger.cfIdentity.level = debug
