I just clicked on “automatic update” in a few piwik installations.
They all habe the following problem: when clicking on Dashboard, this message apears:
Failed to load HTML file: Please check your server configuration. You may want to whitelist “*.html” files from the “plugins” directory. The HTTP status code is 403 for URL “plugins/ZenMode/angularjs/quick-access/quick-access.html”
I found the trac website: The HTTP status code is 403 for URL "plugins/ZenMode/angularjs/quick-access/quick-access.html" · Issue #5210 · matomo-org/matomo · GitHub which says the problem is solved, but it is not.