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) VALUES ('0c9d262391e80c6df29dd69e06c8fa2b', -1, 1714626411, 1714626411, '0315a257', -4, 0)

Line : 158
File : sessions.php