emit transaction failed: error_class=Errno::EIO error="Input/output error @ io_write - <STDOUT>" location="/opt/td-agent/embedded/lib/ruby/gems/2.4.0/gems/fluentd-1.0.2/lib/fluent/log.rb:395:in `write'" tag="nuxeo.access"

...
385     def puts(msg)
386       @logger << msg + "n"
387       @out.flush
388       msg
389     rescue
390       # FIXME
391       nil
392     end
393
394     def write(data)
395       @out.write(data)
396     end
397     # We need `#<<` method to use this logger class with other
398     # libraries such as aws-sdk
399     alias << write
...