Exportieren

Google translation: "I can export photos, it works. However, the process display in the top left of Lightroom freezes or does not complete. When I close LR, I get the message "Tasks are being executed"."

One possibility: One of the photos you're exporting is corrupted. You can quickly test that by selecting all of the photos being exported and doing Metadata > Save Metadata To File. Do you get an error message for one of the files?

LR 13 introduced a nasty bug where Export just hangs indefinitely when it encounters a corrupted file, rather than producing a helpful error message like it used to:

https://community.adobe.com/t5/lightroom-classic-ideas/p-export-hangs-indefinitely-with-corrupt-files-rather-than-producing-an-error-message/idi-p/14580336

Adobe doesn't think this is a bug, so it's not likely to be fixed.