I have installed OJS 3.1.2 when klik submissiion on backend error popup massage as bellow
now i upgrade OJS to the latest version 3.1.2.1 the error still occured.
please help.
I have installed OJS 3.1.2 when klik submissiion on backend error popup massage as bellow
now i upgrade OJS to the latest version 3.1.2.1 the error still occured.
please help.