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 ('1fe8654d1f4797326871f69185b7beb3', -1, 1713416307, 1713416307, '0395e961', -4, 0, 0)

Line : 187
File : sessions.php