how are you installing MyBB - is it through one click installer available at web host or through manual method - uploading files, creating database & running installer ?
if it is the manual method then re-uploadadmin folder with all its contents & try again
(2018-01-12, 05:02 PM).m. Wrote: [ -> ]how are you installing MyBB - is it through one click installer available at web host or through manual method - uploading files, creating database & running installer ?
if it is the manual method then re-uploadadmin folder with all its contents & try again