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 ('1dfeeca8e5bf5a987a9627d9ba2ba385', -1, 1714038599, 1714038599, '0395e906', -4, 0, 0)

Line : 187
File : sessions.php