hello , hope you are fine i have very good grip in wordpress and vps , i will fix this issue .
that is my portfolio you can check
https://www.freelancer.com/u/samair0
Hello, I can start to work immediately and will do it ASAP.
I am an expert in WordPress with more than 4 years of experience in web development.
Looking forward to your quick reply.
Regards,
Mustafa
This is one of the most common WordPress errors and it should be pretty quick and easy to fix.
Was the site previously working and has suddenly developed the error or is it a new WordPress installation?
In either case, assuming that the database hasn't been deleted then it isn't going to be a big problem.
As long as we can log into the WordPress admin and connect to the VPS command line then I could get it sorted out for you very quickly.