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 ('be8db9e60cbb7759df3f9df1053cc0c4', -1, 1713488716, 1713488716, '038b5638', -10, 0, 0)

Line : 187
File : sessions.php