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 ('fa77c566f2a90bf61a0e61348718b705', -1, 1714040406, 1714040406, '038d6478', -10, 0, 0)

Line : 187
File : sessions.php