Several puzzling errors in your WordPress can eat out your brain and WordPress Parse Error is one of them. It generally arises when users have wrongly written the code or changed the code. In the WordPress site, it is called syntax error where there can be issues with the syntax in coding like a semicolon, bracket and all that not written in sequence or written inaccurately.
This error seems troublesome for your website but it is not difficult to solve as removing code, plugins can also solve this problem. Writing accurate syntax also fixes this issue, however, to ensure the troubleshooting call WordPress Customer Service for that.