Error: Web Parts Maintenance Page: If you have permission, you can use this page to temporarily close Web Parts or remove personal settings. For more information, contact your site administrator.

Solution:

Try to check web part maintenance page in case error webpart cause this issue.
How to open this page, please follow the below:
Type the string “?contents=1” at the end of the url of the page.

For example

http://mysite/pages/default.aspx?contents=1