Elan Technosys

First delete those 2 directories first using your FTP client, And then download WordPress fresh copy and extract it, Open WordPress folder select all the files and drop it them into your FTP.
https://codex.www.ads-software.com/Uploading_WordPress_to_a_remote_host
https://codex.www.ads-software.com/Installing_WordPress
https://codex.www.ads-software.com/Uploading_Files

Try changing the permissions on the wp-content directory to 766. If you still have problems, try 767, 775 or 777. Once your uploads are working, change the permissions on wp-content back to 755 again and check that everything still works OK.
https://codex.www.ads-software.com/Changing_File_Permissions

Yes, I was right your installation has missing wp-admin folder and some other files in WordPress root folder, I would suggest download a fresh copy of WordPress and re-upload it.

Are you seeing blank screen only in wp-admin?
Also have a look at Common_WordPress_Errors

Can you check for file permissions for wp-uploads directory and post it here?

Can you post your website url here so we can check it and tell you. Alternatively you can try /wp-login.php. But it looks wp-admin directory is missing in your WordPress files.

Download fresh copy of WordPress and upload wp-admin folder using your FTP.

Can you open functions.php and look for line 372, and post here the line 372 then we will be able to help you.

That is great, If the issue is solved then please change topic status to resolved.

I don’t what problem are you getting but I’m able to see the login form at https://navigatinip.com/wp-admin and also you have to change your site url too in-order to get it work correctly.

Just login WordPress login page and then go to settings and set site url and wordpress url to https://navigatingip.com Also see this for more help Changing The Site URL

Kindly post your site url and theme url.

Yes, you can.

Yes both should be https://meshoppy.com because currently when you go to https://meshoppy.com/ you will be redirected to https://meshoppy.com/mysite

When I open https://meshoppy.com it redirects me to https://meshoppy.com/mysite ? And also Site url means the main front end url and wordpress means the url whee wordpress files are so in this case both should be https://meshoppy.com and make sure you have all the files moved from /mysite.