Hi sir, intersted problem, i already have faced problem like this, some times this error come besauce of code and some time because of overload ( need to restart server ). i know how to fix it, i can fix it in very next few hours, i know i don't have any review yet, but i have completed 2 projects at freelance and those are not closed, I would be pleased if you become my first review on this website, so finally I'm available in the next couple of hours to get this job done correctly for you, best regards.