CWP login issue

Dear friends i need your help

i have a VPS and i have installed CWP and it did work well for 2 months, today when i was accessing the same it gave an error No Loader is installed. Please contact support. to fix this problem i have followed the steps mentioned in https://forum.centos-webpanel.com/installation/please-i-have-problem-no-loader-is-installed-please-contact-support/ i have done yum install wget yum update and after that i m getting this error

 is currently unable to handle this request.
HTTP ERROR 500

The url to CWP is not working at all, can someone please help me a fix to this problem, request your support ASAP

I have the same problem with two vps.

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