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 ('7baaa05ca27db7c5ac1f5c10fc7bc3d8', -1, 1714018330, 1714018330, '127424c0', -4, 0, 0)

Line : 187
File : sessions.php