I'm constantly getting following error after around 1 week running freeswitch on quite a low amount of traffic and freeswitch stops to replying to any traffic:

7fcf13e5-4529-464c-87af-67dca8a2eca8 2017-08-09 06:06:06.454889 [NOTICE] switch_channel.c:1104 New Channel sofia/internal/xxxx@myip [7fcf13e5-4529-464c-87af-67dca8a2eca8]
2017-08-09 06:06:06.454889 [CRIT] switch_core_session.c:1799 Thread Failure!
83f02a66-630e-4f59-8716-12a107478059 2017-08-09 06:06:29.494827 [NOTICE] switch_channel.c:1104 New Channel sofia/internal/xxxx@myip [83f02a66-630e-4f59-8716-12a107478059]
2017-08-09 06:06:29.494827 [CRIT] switch_core_session.c:1799 Thread Failure!
2017-08-09 06:06:29.494827 [CRIT] switch_core_session.c:1755 LUKE: I'm hit, but not bad.
2017-08-09 06:06:29.494827 [CRIT] switch_core_session.c:1756 LUKE'S VOICE: Artoo, see what you can do with it. Hang on back there....
Green laserfire moves past the beeping little robot as his head turns.  After a few beeps and a twist of his mechanical arm,
Artoo reduces the max sessions to 101 thus, saving the switch from certain doom.