MS Teams media fails with error Sending Failed: (and no details)

[Maxburn]

Update; I received an email from microsoft regarding these failures, it had no additional information, just failed.

Solved; I just realized there is a more appropriate "MS Teams Workflow webhook" version, entered that and it works.

https://www.zabbix.com/integrations/msteams#msteams-workflow

---------------------------original issue below----------------------


Using this guide; https://www.zabbix.com/integrations/msteams
I imported the yaml file from zabbix-release-7.0@0a2241552aa
My server is currently Zabbix 7.0.25 LTS
Originally I got error Teams failed; No media defined for user. - discovered the media didn't save somehow. Fixed that. Now I'm up against this blank error.

I verified my teams webhook URL works in OpenCanary. It is in the form of this below and was created with Workflow / Power Automate.

https://defaulta5a5LotsOfRandomStuffaea.74.environment.api.powerplatform.com:443/powerautomate/automations/direct/workflows/f4244db8BigRandomThing6f66/triggers/manual/paths/invoke?api-version=1&sp=%2Ftriggers%2Fmanual%2Frun&sv=1.0&sig=A0-2FQKMoreRandomThingsam9muUc

Logs on disk are also empty of reason;

user@server-zbxv6:/var/log/zabbix$ sudo egrep Teams zabbix_server.log
  1151:20260518:135418.740 [MS Teams Webhook] FAILED with response:
  1151:20260518:135418.740 [MS Teams Webhook] notification failed:
  1149:20260518:135428.687 [MS Teams Webhook] FAILED with response:
  1149:20260518:135428.687 [MS Teams Webhook] notification failed:
  1151:20260518:135438.739 [MS Teams Webhook] FAILED with response:
  1151:20260518:135438.739 [MS Teams Webhook] notification failed:
  1151:20260518:140019.350 [MS Teams Webhook] FAILED with response:
  1151:20260518:140019.350 [MS Teams Webhook] notification failed:
  1151:20260518:140030.386 [MS Teams Webhook] FAILED with response:
  1151:20260518:140030.386 [MS Teams Webhook] notification failed:
  1149:20260518:140041.505 [MS Teams Webhook] FAILED with response:
  1149:20260518:140041.505 [MS Teams Webhook] notification failed:
user@server-zbxv6:/var/log/zabbix$