Hello Kar,
I had also tried to change the permalinks but even after that was facing the same issue.
I don’t know what hosting company you’re using but my client is using GoDaddy and before even posting my support request here I contacted with the GoDaddy support team and ask them to resolve my issue after going through these support articles by Elementor;
https://docs.elementor.com/article/185-the-update-button-does-not-work
https://docs.elementor.com/article/227-undefined-error-while-loading-templates
But they’re saying that this problem is not occurring from their side and I should contact the Elementor team and as they are sure that this is something that the only elementor could solve.
Now I’m just hoping to get the proper solution from the team Elementor to fix this issue permanently as they are my last hope in this situation.