Asterisk hang every one to three hours

Hi everyone.
I installed elastix 2.4 and have 2 openvox G400E on it. My problem is asterisk will hang sometimes every hour when there is say 4 persons using it. Looking at the asterisk log I see these anomaly before it hang

[2018-07-19 10:30:58] WARNING[3624][C-000001dd] file.c: Unable to open custom/Welcome_5 (format (nothing)): No such file or directory
[2018-07-19 10:30:58] WARNING[3624][C-000001dd] pbx.c: ast_streamfile failed on EXTRA-SMS/15-1 for custom/Welcome_5
[2018-07-19 10:31:01] WARNING[3618][C-000001d9] channel.c: Unable to find a codec translation path from (nothing) to (slin)
[2018-07-19 10:31:01] WARNING[3618][C-000001d9] file.c: Unable to open no-valid-responce-transfering (format (nothing)): No such file or directory
[2018-07-19 10:31:01] WARNING[3618][C-000001d9] app_playback.c: ast_streamfile failed on EXTRA-SMS/3-2 for no-valid-responce-transfering
[2018-07-19 10:31:01] NOTICE[3618][C-000001d9] chan_sip.c: Asked to get a channel of unsupported format (nothing) while capability is (gsm|ulaw|alaw)
[2018-07-19 10:31:01] WARNING[3618][C-000001d9] app_dial.c: Unable to create channel of type ‘SIP’ (cause 58 - Bearer capability not available)
[2018-07-19 10:31:01] WARNING[3618][C-000001d9] channel.c: Unable to find a codec translation path from (nothing) to (gsm)
[2018-07-19 10:31:01] WARNING[3618][C-000001d9] file.c: Unable to open vm-theperson (format (nothing)): No such file or directory
[2018-07-19 10:31:01] WARNING[3618][C-000001d9] channel.c: Unable to find a codec translation path from (nothing) to (slin)
[2018-07-19 10:31:01] ERROR[3618][C-000001d9] channel.c: Could not set write format to SLINEAR
and this
WARNING[3669] chan_sip.c: Autodestruct on dialog ‘29c969dc337b8bb03575e8dd0aae14d8@192.168.100.98:5060’ with owner SIP/4022-0000019c in place (Method: BYE). Rescheduling destruction for 10000 ms
[2018-07-19 15:00:21] WARNING[3669] chan_sip.c: Autodestruct on dialog ‘d62e7ff0140b4c62a75db8dab57aab03’ with owner SIP/4026-0000018f in place (Method: BYE). Rescheduling destruction for 10000 ms
[2018-07-19 15:00:27] WARNING[3669] chan_sip.c: Autodestruct on dialog ‘29c969dc337b8bb03575e8dd0aae14d8@192.168.100.98:5060’ with owner SIP/4022-0000019c in place (Method: BYE). Rescheduling destruction for 10000 ms
[2018-07-19 15:00:27] WARNING[3669] chan_sip.c: Autodestruct on dialog ‘d62e7ff0140b4c62a75db8dab57aab03’ with owner SIP/4026-0000018f in place (Method: BYE). Rescheduling destruction for 10000 ms
[2018-07-19 15:00:33] WARNING[3669] chan_sip.c: Autodestruct on dialog ‘29c969dc337b8bb03575e8dd0aae14d8@192.168.100.98:5060’ with owner SIP/4022-0000019c in place (Method: BYE). Rescheduling destruction for 10000 ms
[2018-07-19 15:00:34] WARNING[3669] chan_sip.c: Autodestruct on dialog ‘d62e7ff0140b4c62a75db8dab57aab03’ with owner SIP/4026-0000018f in place (Method: BYE). Rescheduling destruction for 10000 ms
[2018-07-19 15:00:37] WARNING[3669][C-00000195] chan_sip.c: Got Opus maxplaybackrate=24000

the one that say file is missing, the file is there and it is played with incoming calls
thisis driving me crazy for the last two months. Is there anyone could help me with this issue. I would be grateful. Thanks

Any help, Or point me in a direction?

This looks like a codec issue make a sip trace and verify one of the call party it is not specifying any codec on the call negotiation

I will do that an let you know.