string(245) "INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('8176ba2dc94e65240b5af1b5a8a0a94c', -1, 1429598724, 1429598724, '36cd9d5e', -9, 0, 0)" phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('8176ba2dc94e65240b5af1b5a8a0a94c', -1, 1429598724, 1429598724, '36cd9d5e', -9, 0, 0)

Line : 192
File : sessions.php