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 ('197f6cae1df12451b01e6675d9d00750', -1, 1713853858, 1713853858, '038df4c9', 3, 0, 0)

Line : 187
File : sessions.php