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 ('9fc1b0f3c00e3af47c1236b13fc43c48', -1, 1747664315, 1747664315, '0387e56a', 12, 0, 0)

Line : 190
File : sessions.php