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 ('995f206a95b312b3e661b29e8bb3b04b', -1, 1713528146, 1713528146, '038b68d6', -10, 0, 0)

Line : 187
File : sessions.php