But the old reports in the Reports menu are now full of errors
I haven’t noticed, but a) I never use any of them, and b) even if I did I wouldn’t use the PDF output. The browser natively does a better job rendering the HTML version.
But regardless I won’t be fixing any issues with reports. They will all soon be deleted as alternatives are developed.
My recommendation is to hide such errors by disabling any report that show an error, or as I do, disable all of them. They are, without exception, rubbish.