.NET 7升级后执行Add-Migration命令出现重复键异常

项目从ASP.NET Core 6升级至.NET 7后，运行阶段无任何报错，但执行EF Core迁移命令时遇到异常，同时调试时触发宿主中止异常，具体情况如下：

Add-Migration 异常情况 #

已更新项目所有NuGet包，执行命令Add-Migration -name test2时显示构建成功，但抛出如下重复键异常：

at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
   at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
   at System.Linq.Enumerable.ToDictionary[TSource,TKey](IEnumerable`1 source, Func`2 keySelector, IEqualityComparer`1 comparer)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.AddSeedData(IEntityType entityType, Dictionary`2 identityMaps, EntityState initialState)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.TrackData(IRelationalModel source, IRelationalModel target, DiffContext diffContext)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.GetDataOperations(IRelationalModel source, IRelationalModel target, DiffContext diffContext)+MoveNext()
   at System.Linq.Enumerable.ConcatIterator`1.MoveNext()
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.Sort(IEnumerable`1 operations, DiffContext diffContext)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.GetDifferences(IRelationalModel source, IRelationalModel target)
   at Microsoft.EntityFrameworkCore.Migrations.Design.MigrationsScaffolder.ScaffoldMigration(String migrationName, String rootNamespace, String subNamespace, String language)
   at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.AddMigration(String name, String outputDir, String contextType, String namespace)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigrationImpl(String name, String outputDir, String contextType, String namespace)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigration.<>c__DisplayClass0_0.<.ctor>b__0()
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass3_0`1.<Execute>b__0()
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
An item with the same key has already been added. Key: Description

HostAbortedException 异常情况 #

使用NLog调试时，在代码var app = builder.Build();位置触发Microsoft.Extensions.Hosting.HostAbortedException异常。

已尝试的解决措施 #

• 修改可空类型字段为?，并在项目构建属性中禁用可空上下文
• 使用Debugger.Launch启动调试，问题仍未解决

内容的提问来源于stack exchange，提问作者Hamzeh Shakerian