On this month's patch activity day, Microsoft released a cumulative update kb4577063 for windows 10 may 2020 function update. After installation, the version number rose to build 19041.508. However, some users reported that the cumulative update caused WSL 2 not to work normally, and caused the error of "element not found". The only thing you can do to get back to normal is to uninstall the cumulative update.
Can the problem be solved by re installing kb4577063? A user on the WSL project page on GitHub confirmed that the installation update fixed the problem for him.