MyBB Community Forums

hi i found some database problem in my forum i cant understand how can i solve this problem so need healp

database error massage :

Problems with the indices of the table `` mybb_privatemessages 

These indices appear to be identical, and one of them must be removed: PRIMARY, pmid 

Problems with the indices of the table `` mybb_users 
These indices appear to be identical, and one of them must be removed: username_2, username_3

pls describe how can i solve this problem .

thanks

Have you installed any plugins recently? Did you convert another forum database to MyBB?