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 ('3e5621c1d4af66fb53ae596e3f6083a0', -1, 1713575684, 1713575684, '12758940', -9, 0, 0)

Line : 187
File : sessions.php