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

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1ea508b-1d23.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1ea508b-1d23.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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