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 ('6f50f6f73dce9f5c2ed5c8fdd0ed018c', -1, 1638991731, 1638991731, '035159f8', 11, 0, 0)

Line : 187
File : sessions.php