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 ('09c3f0a5612ed7b7a0cd1b1ea1877ffb', -1, 1713579193, 1713579193, '0380c7a2', 5, 0, 0)

Line : 187
File : sessions.php