WordPress reports nonexistent updates

For some time now, only when I enter the WordPress dashboard for the first time, it sends me 11 updates that don’t exist. Right now the only update I have to do is that of the theme, but the others are not real. As soon as I open the updates page, the notification corrects itself with the right number, i.e. 1. This happens to me even if I have nothing to update, I open the page and the number resets. I really have no idea what it could be, I tried disabling and uninstalling the plugins. I also tried reinstalling them from scratch, to see if there wasn’t a bug or conflict with one of them. I can’t get over anything. Has anyone had the same problem? Thanks to whoever replies.