The immediate cause of the failure is apparently the error return from sangomacrm.agi, but the underlying cause is hidden. For example, see
With luck, if you temporarily disable the CRM module and/or turn on pjsip logger, you’ll be able to see the trouble (or paste a new log).
BTW, I recommend using pastebin.com ; pastes (by default) last forever, so future readers of the thread can follow along. That used to also be true at pastebin.freepbx.org but someone at Sangoma recently changed it (IMO a bad idea).