Step 1: Open the Ftp/Cpanel.
Step 2: Go to the following path as shown in the screenshot below.
Step 3: Click and open the overrides folder on the left hand side, After opening the folder you will be seeing a file called “english.php”, open that file.
Step 4: After opening the file, Start copying the content of the file starting the line 5 as shown in the screenshot below and keep copying till the end of file.
Step 5: Once you have copied the content of the file given in the above step, on the left hand side go to the path /lang/overrides and open the file called “english.php”.
Step 6: Paste the content copied from previous step ( Step 4 ) and start to paste it after the line 3 as shown in the screenshot below. Or you can paste that content at the end of the file as well.
Note:- Now your language variable is set for english. Repeat the same process for all other languages.