ASR don't execute

Hi,
I have 1 SnipsServer (pi3) and 3 satellites (pi0).
Sometimes, the ASR didn’t analyse my voice. In the /var/log/syslog, when i saw this 3 lignes, it’s perfect :
Sep 1 09:28:50 SNIPS-SERVER snips-asr-google[626]: INFO:snips_asr_google_lib::google_auth: Connecting using service account file “/usr/share/snips/googlecredentials.json”
Sep 1 09:28:50 SNIPS-SERVER snips-asr[617]: INFO:snips_asr_lib::asr : T0 entered AsrRunner::run
Sep 1 09:28:50 SNIPS-SERVER snips-asr[617]: INFO:snips_asr_lib::asr : T0+0.000 capture started

but sometines, the log is
Sep 1 09:25:59 SNIPS-SERVER snips-asr[617]: INFO:snips_asr_hermes::handler : Listening at site id bureau
Sep 1 09:25:59 SNIPS-SERVER snips-asr[617]: INFO:snips_asr_hermes::handler : Listening
Sep 1 09:26:09 SNIPS-SERVER snips-dialogue[612]: INFO:snips_dialogue_lib::coordinator::coordinator: Session [1287c781-5be7-4362-8ef3-89485b080eab]: closing session which was active: Timeout

Have you a idea why i didn’t always have the ligne “T0 entered AsrRunner::run”
thanks