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 ('a61d81a5f372142996e8c8d285910192', -1, 1634451922, 1634451922, '12cc02e7', 44, 0, 0)

Line : 187
File : sessions.php