Hi @guilhacerda. Welcome to GoDaddy community!
I've not come across that error before. Do you have a site where members are able to log in? Perhaps too many users are attempting to log in at the same time? If you can provide more information about the site, other community members may be able to provide you with more suggestions.
I have the same issue. I use a wordpress page on Godaddy for a class that I teach. When I try to get my students to sign up for the page at the same time (about 12 students), I get this error. Is there a way to get around?
same problem for me. I am also getting time outs and very slow performance on the backend of my site. Pages will not load. Other than the managed update to Wordpress core, no other changes that would impact load.