We have upgraded from OJS-3.3.0-14 to OJS-3.4.0-4.
If I am opening CustomBlock Plugin, QuickSubmit Plugin then Failed to initialize plugin: PKP tag is visible. I have checked the error logs but nothing is reported.
Here I am attaching a screenshot of Browser Inspection. Please help.
I have seen that last week. Trying to figure it out I reloaded/restarted multiple times. After some cleaning the cache and reloading (multiple times) it hasn’t come up it again. Maybe try some thorough cache cleaning.