Not sure if this is related but I recently updated to Moodle 3.10 and, when I set DEBUG to DEVELOPER mode I get this error message in the console:
warn: The moodle-core-notification parent module has been deprecated. Please use one of its subclasses instead.
I have looked on the Moodle forums and docs but not sure what action I should take now.
I am currently testing my plugins for Moodle 3.10 compatibility and this problem prevents me from working on that task.