after upload my site on go daddy this error show pls tell me how to solve it

after upload my site on go daddy this error show pls tell me how to solve it

After uploading my site on go daddy I'm getting the following error error:
Link to database cannot be established: SQLSTATE[HY000] [2002] Can't
connect to local MySQL server through socket '/var/lib/mysql/mysql.sock'
(2)
Can someone tell me how to solve it step by step please?