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 ('9e3df0a5f55763109feb1bdd55b8c461', -1, 1747598352, 1747598352, '0389adaa', 5, 0, 0)

Line : 190
File : sessions.php