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 ('704a94b80616a8bf2c5f9f5335df80b5', -1, 1714043372, 1714043372, '12759469', -11, 0, 0)

Line : 187
File : sessions.php