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 ('ffe77a5831c1ef9572a29ac1fffd8fb4', -1, 1730435956, 1730435956, '0316b551', -1, 0, 0)

Line : 195
File : sessions.php