Hi,
When upgrading from "M3.10.4+" to "M3.11" got this error message:
"error/The session caches can not be in the session store when enable_read_only_sessions is enabled. Please map all session mode caches to be outside o..."
Only after adding "$CFG->enable_read_only_sessions_debug = true;" I could proceed to complete the upgrade.
Ricardo
Installing and upgrading help
Moodle 3.11 - Installation error message
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