WordPress website down suddenly - Hosted in AWS (READ FIRST!!)

Job ID: 37295549

Budget: $10 – $15 USD

I have a WordPress website hosted in AWS Lightsail. The website was working fine, and all of a sudden starting from yesterday many pages of the website do not work, and show the error "There has been a critical error on this website."

And I am unable to login to admin panel too. It is not working! And throws an error "There has been a critical error on this website. Please check your site admin email inbox for instructions."

I need a helping hand to find out the problem, and resolve it completely.

Budget: 15 USD.

Apply only if you are available to look into it URGENTLY!
Related categories: PHP Linux WordPress MySQL Amazon Web Services