Asp.net core uses Update-Database Synchronize datasheet to the database. Times error.

I used asp.net core version 2.1
sqlite
before the database was used, I added several data structures to XXXContext AAA BBB CCC
in the Nuget console and entered the command
Add-Migration test
and Update-Database
sqlite successfully created all the data structures of XXXContext

now I have added a new data structure in XXXContext YYYY
in the Nuget console and enter the command
Remove-Migration
Add-Migration test
and Update-Database
the result will report an error
SQLite Error 1: "table "AspNetRoles" already exists".

besides, if I want to modify a field of a data structure in XXXContext, how do I Synchronize to the database after modification

Asp.net-core

Mar.11,2022

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