Temporary solution:
I changed Elementor version to 3.22.3 and Elementor Pro to 3.22.1 and the problem disappeared. I did not check with higher versions – I do not have time to play. I simply reverted the version from which I was updating to 3.25.X.
We have to wait until Elementor Team takes care of the problem.
Hello,
I have the same error. It occurred after updating Elementor and a few other plugins. After changing the PHP version to 7.4, the problem disappears. Elementor has constant problems in PHP higher than 7.4, because it officially supports only PHP up to 7.4. The problem is that 7.4 is no longer supported and hosting companies charge extra for maintaining them on servers.