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 ('3f7517a6e73d1d5065b1a46003fed167', -1, 1615284811, 1615284811, '03ef9e24', -24, 0, 0)

Line : 189
File : sessions.php