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 ('c702da15f60e57c8e8d3bed622e8de4e', -1, 1713541089, 1713541089, '038eade3', 5, 0, 0)

Line : 187
File : sessions.php