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 ('9e39c5a01dd9cee9e1017c158004cc37', -1, 1713958584, 1713958584, '12bf2e24', -2, 0, 0)

Line : 187
File : sessions.php