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 ('a6e98d75efca01087f61b9174c22b841', -1, 1713552477, 1713552477, '0d3ac51a', -7, 0, 0)

Line : 187
File : sessions.php