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 ('527f5cc5b61cf9b2a8b98b77140423a1', -1, 1713448007, 1713448007, '2cd295cd', -2, 0, 0)

Line : 187
File : sessions.php