Link to database cannot be established: SQLSTATE[HY000] [2002] No such file or directory

[jcasub]

Hello,

 

Is the second time, when i am in the prestashop backend, and I save a product suddently appear a white screen with that message. I refresh several times and appear both in back end and front-end, and our store is not accessible.

 

Link to database cannot be established: SQLSTATE[HY000] [2002] No such file or directory

 

After 1-2 minutes, i refresh again, all back to normal.

 

Does somebody know which can be the issue?

 

Thanks so much,