I have FreeSwitch docker container and cannot receive fax. In FreeSwitch log i see error 2017-09-06 20:08:06.963387 [ERR] switch_core_timer.c:117 Timer is not properly configured. But during freeswitch boots up i not see any timer related errors. This error arise during rxfax application. I have tested timer using "timer_test" command and log results like freeswitch@freeswitch1.kazoo> timer_test Avg: 19.999ms Total Time: 999.999ms 2017-09-06 20:09:50.293389 [CONSOLE] mod_commands.c:955 Timer Test: 1 sleep 20 20000 2017-09-06 20:09:50.313385 [CONSOLE] mod_commands.c:955 Timer Test: 2 sleep 20 20003 2017-09-06 20:09:50.333385 [CONSOLE] mod_commands.c:955 Timer Test: 3 sleep 20 20005 2017-09-06 20:09:50.353384 [CONSOLE] mod_commands.c:955 Timer Test: 4 sleep 20 19995 2017-09-06 20:09:50.373387 [CONSOLE] mod_commands.c:955 Timer Test: 5 sleep 20 19998 Could you advice where to look to find root of issue?