we've upgraded our Moodle installation from 3.8 to 3.9 last night. Everything worked fine at the first sight (although the process of upgrading needed an experienced system administrator...), but we're experiencing massive problems with the built in messaging system as well with mobile push notifications since the upgrade:
- When sending a message via browser I get the following error message as a popup:
"Cannot read property 'lastmessagedate' of undefined"
- Additionally I get the following error message as a second popup:
Syntax error, unrecognized expression: (with the whole text of the message following)
- Also, I get the following error message in my message stream:
Error: Call to a member function force_process_messages() on null
We've figured out that messages are sent and also received, but the errors make the built in messenger tool not useable any more. Additionally, no push notifications are sent to any user (although we have an active premium plan).
You can find some screenshots attached. We hope for quick replies – thx in advance!