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 ('e69c8aa51892ac7cebb6f0a39ee2399f', -1, 1713927608, 1713927608, '0310515e', -10, 0, 0)

Line : 187
File : sessions.php