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 ('558c61fc08adcca085b428d4f51c1091', -1, 1730418129, 1730418129, '03915d91', -1280, 0, 0)

Line : 195
File : sessions.php