So i was working on this website and i made one page and now when i try to access the page in editor mode it is showing this error but i can preview the page ,the theme used in this site is kallyas and it was purchased more than 5 years ago ,i also can't use so some elements as it shows error ….what seems to the problem here ?
This might take a while to resolve, depending how quick you find the cause
[https://www.wpbeginner.com/wp-tutorials/how-to-fix-the-internal-server-error-in-wordpress/](https://www.wpbeginner.com/wp-tutorials/how-to-fix-the-internal-server-error-in-wordpress/)