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 ('5b6564115f1b6ed32b0408c7e7695725', -1, 1748082858, 1748082858, '12756c86', 2, 0, 0)

Line : 190
File : sessions.php