Reports do not get generated

Since the last update I get error generating reports. everything works except tget this message in blue:
It looks like reports for this period have not been processed yet. Do you want to see what’s happening now? Check out the [Visits log] ( my site url) or choose a different date period until the reports are generated.

and

The archiving of your reports hasn’t been executed recently, learn more about how to generate your reports.(url)

Troubleshooter spits out a mile of html with this at the start:

Matomo Archive Warnings: 'Got invalid response from API request: ?module=API&method=CoreAdminHome.archiveReports&idSite=1&period=day&date=2022-06-30&format=json&trigger=archivephp. Response was ’

WordPress › Error

///////////// and this at the end:
.button:active {
background: #f3f5f6;
border-color: #7e8993;
-webkit-box-shadow: none;
box-shadow: none;
}

There has been a critical error on this website.

Learn more about troubleshooting WordPress.

\'' '210 total errors during this script execution, please investigate and try and fix these errors.' '210 total errors during this script execution, please investigate and try and fix these errors.'

my site otherwise works just fine: