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 ('3dcf29979da984186512168c3b0a7b66', -1, 1429605077, 1429605077, '36e3d78c', -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 ('3dcf29979da984186512168c3b0a7b66', -1, 1429605077, 1429605077, '36e3d78c', -9, 0, 0)

Line : 192
File : sessions.php