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 ('e0f1dcfc61a79b0eb681dc06e053d6be', -1, 1748858946, 1748858946, '12df8647', -9, 0, 0)

Line : 190
File : sessions.php