Suite CRM API not connecting from WordPress


While connecting to CRM with API from WordPress, the API is not making connection to crm even when login details are correct.

Previously the connection was working fine, but now there is no connection. Can you guide us how to solve it, we tried rebuild, but no luck.


while checking log it gives
Wed Mar 1 00:02:14 2017 [10030][1][FATAL] é
Wed Mar 1 00:03:16 2017 [10032][1][FATAL] Exception in Controller: é
Wed Mar 1 00:03:25 2017 [7308][1][FATAL] Exception in Controller: é

Please guide us, how to resolve this issue