Piwik UI/Loading Errors on New Installation

I just installed Piwik on a new website. but for some reason the UI doesn’t load at all.

As per the FAQ I tried both increasing max_execution_time and adding disable_merged_assets = 1. I do not use an Adblocker, reset my browser cache, and deleted the contents of the /tmp/ folder.

The only thing in my error log relating to Piwik was the following:
Notice: ob_flush() [ref.outcontrol]: failed to flush buffer. No buffer to flush in upgrade.php on line 636

Any assistance would be appreciated. I poured over the FAQ/Troubleshooting and can’t seem to find the problem here.

Edit: Yes I tried creating a CRON job too. No, it didn’t help.

Hi there, please try this patch: Notice: ob_flush() [ref.outcontrol]: failed to flush buffer. No buffer to flush · Issue #6845 · matomo-org/matomo · GitHub