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 ('7e8c2c63d37759b4b0e59f4400dd9a29', -1, 1749955751, 1749955751, 'd849d8c4', -9, 0, 0)

Line : 190
File : sessions.php