anyone knows...

i was checking my logs and a i found this "payload:13", anyone konws what is this? i am very new in logs. thanks

Without any context - no.

@antontananaev that just apear in my logs folder:

IDLE            payload:13  tracker-server.log           tracker-server.log.20210310  tracker-server.log.20210315  tracker-server.log.20210320
null            payload:14  tracker-server.log.20210306  tracker-server.log.20210311  tracker-server.log.20210316  tracker-server.log.20210321
null:IDLE--     payload:15  tracker-server.log.20210307  tracker-server.log.20210312  tracker-server.log.20210317  tracker-server.log.20210322
null:WRITING--  payload:16  tracker-server.log.20210308  tracker-server.log.20210313  tracker-server.log.20210318  tracker-server.log.20210323
payload:12      payload:17  tracker-server.log.20210309  tracker-server.log.20210314  tracker-server.log.20210319  WRITING

this is the content of the folder

Those files are not generated by Traccar, at least not by a standard version. Only tracker-server.log* is Traccar logs.

@antontananaev thanks i dont know why they appear there.