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 ('0f0e3c326a7de5b4d1d1d5596273c1b7', -1, 1714241943, 1714241943, '0a020003', 0, 0, 0)

Line : 187
File : sessions.php