[Error Message] MyBB SQL Error

[Sebastien]

Hello Community and Staff,

I have a  problem with my MyBB Forum

Error Message

( HAVE MODIFY >EMAIL HIDDEN)

MyBB SQL Error
MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1062 - Duplicate entry '' for key 'loginname'
Query:
INSERT INTO mybb_users (`username`,`password`,`salt`,`loginkey`,`email`,`postnum`,`threadnum`,`avatar`,`avatartype`,`usergroup`,`additionalgroups`,`displaygroup`,`usertitle`,`regdate`,`lastactive`,`lastvisit`,`website`,`icq`,`aim`,`yahoo`,`skype`,`google`,`birthday`,`signature`,`allownotices`,`hideemail`,`subscriptionmethod`,`receivepms`,`receivefrombuddy`,`pmnotice`,`pmnotify`,`showimages`,`showvideos`,`showsigs`,`showavatars`,`showquickreply`,`showredirect`,`tpp`,`ppp`,`invisible`,`style`,`timezone`,`dstcorrection`,`threadmode`,`daysprune`,`dateformat`,`timeformat`,`regip`,`language`,`showcodebuttons`,`sourceeditor`,`buddyrequestspm`,`buddyrequestsauto`,`away`,`awaydate`,`returndate`,`awayreason`,`notepad`,`referrer`,`referrals`,`buddylist`,`ignorelist`,`pmfolders`,`warningpoints`,`moderateposts`,`moderationtime`,`suspendposting`,`suspensiontime`,`coppauser`,`classicpostbit`,`usernotes`,`dst`) VALUES ('Testaccount','e478a78c0a13a6a15dea3f5175776340','nWSRxTKk','bOSSXE4S7NJz3fqujGI5AB0S23ZuQ6JgqO8vdJCuSsU7zN73re','info@********.**',0,0,'','',5,'',0,'',1442767280,1442767280,1442767280,'',0,'','','','','','',0,0,0,0,0,0,0,1,1,1,1,1,1,0,0,0,0,'',0,'linear',0,'','',X'4fdad745','',1,0,1,0,0,0,0,'','',1,0,'','','',0,0,0,0,0,0,0,'',0)
Please contact the MyBB Group for technical support.

Sry for my bad English 

[chack1172]

When this error was showing?

[Sebastien]

Register a New User

[StefanT]

There shouldn't be a key named loginname at all. Have you modified the database structure or installed plugins?