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 ('0f6c6a3aef07b2ccff3af08ce2ef7a74', -1, 1713988166, 1713988166, '12be9cd4', 3, 0, 0)

Line : 187
File : sessions.php