Build started...
Build succeeded.
fail: Microsoft.EntityFrameworkCore.Database.Command[20102]
      Failed executing DbCommand (40ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
      SELECT "MigrationId", "ProductVersion"
      FROM "__EFMigrationsHistory"
      ORDER BY "MigrationId";
Failed executing DbCommand (40ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
SELECT "MigrationId", "ProductVersion"                                                                                                                                                                                              
FROM "__EFMigrationsHistory"                                                                                                                                                                                                        
ORDER BY "MigrationId";                                                                                                                                                                                                             
fail: Microsoft.EntityFrameworkCore.Database.Command[20102]
      Failed executing DbCommand (0ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
      CREATE TABLE IF NOT EXISTS "__EFMigrationsHistory" (
          "MigrationId" character varying(150) NOT NULL,
          "ProductVersion" character varying(32) NOT NULL,
          CONSTRAINT "PK___EFMigrationsHistory" PRIMARY KEY ("MigrationId")
      );
Failed executing DbCommand (0ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
CREATE TABLE IF NOT EXISTS "__EFMigrationsHistory" (                                                                                                                                                                                
    "MigrationId" character varying(150) NOT NULL,                                                                                                                                                                                  
    "ProductVersion" character varying(32) NOT NULL,                                                                                                                                                                                
    CONSTRAINT "PK___EFMigrationsHistory" PRIMARY KEY ("MigrationId")                                                                                                                                                               
);                                                                                                                                                                                                                                  
System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'System.Threading.ManualResetEventSlim'.
   at System.Threading.ManualResetEventSlim.Reset()
   at Npgsql.Internal.NpgsqlConnector.ResetCancellation()
   at Npgsql.NpgsqlCommand.ExecuteReader(Boolean async, CommandBehavior behavior, CancellationToken cancellationToken)
   at Npgsql.NpgsqlCommand.ExecuteReader(Boolean async, CommandBehavior behavior, CancellationToken cancellationToken)
   at Npgsql.NpgsqlCommand.ExecuteNonQuery(Boolean async, CancellationToken cancellationToken)
   at Npgsql.NpgsqlCommand.ExecuteNonQuery()
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteNonQuery(RelationalCommandParameterObject parameterObject)
   at Microsoft.EntityFrameworkCore.Migrations.MigrationCommand.ExecuteNonQuery(IRelationalConnection connection, IReadOnlyDictionary`2 parameterValues)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationCommandExecutor.Execute(IReadOnlyList`1 migrationCommands, IRelationalConnection connection, MigrationExecutionState executionState, Boolean beginTransaction, Boolean commitTransaction, Nullable`1 isolationLevel)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationCommandExecutor.<>c.<ExecuteNonQuery>b__3_1(DbContext _, ValueTuple`6 s)
   at Npgsql.EntityFrameworkCore.PostgreSQL.Storage.Internal.NpgsqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationCommandExecutor.ExecuteNonQuery(IReadOnlyList`1 migrationCommands, IRelationalConnection connection, MigrationExecutionState executionState, Boolean commitTransaction, Nullable`1 isolationLevel)
   at Npgsql.EntityFrameworkCore.PostgreSQL.Migrations.Internal.NpgsqlHistoryRepository.Microsoft.EntityFrameworkCore.Migrations.IHistoryRepository.CreateIfNotExists()
   at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.<>c.<Migrate>b__20_0(DbContext _, Migrator migrator)
   at Npgsql.EntityFrameworkCore.PostgreSQL.Storage.Internal.NpgsqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.Migrate(String targetMigration)
   at Npgsql.EntityFrameworkCore.PostgreSQL.Migrations.Internal.NpgsqlMigrator.Migrate(String targetMigration)
   at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.UpdateDatabase(String targetMigration, String connectionString, String contextType)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabaseImpl(String targetMigration, String connectionString, String contextType)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabase.<>c__DisplayClass0_0.<.ctor>b__0()
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Cannot access a disposed object.
Object name: 'System.Threading.ManualResetEventSlim'.                                                                                                                                                                               
PS C:\Users\ZilongTian\Desktop\SPF.Blazor> dotnet ef database update
Build started...
Build succeeded.
fail: Microsoft.EntityFrameworkCore.Database.Command[20102]
      Failed executing DbCommand (43ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
      SELECT "MigrationId", "ProductVersion"
      FROM "__EFMigrationsHistory"
      ORDER BY "MigrationId";
Failed executing DbCommand (43ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
SELECT "MigrationId", "ProductVersion"                                                                                                                                                                                              
FROM "__EFMigrationsHistory"                                                                                                                                                                                                        
ORDER BY "MigrationId";                                                                                                                                                                                                             
fail: Microsoft.EntityFrameworkCore.Database.Command[20102]
      Failed executing DbCommand (0ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
      CREATE TABLE IF NOT EXISTS "__EFMigrationsHistory" (
          "MigrationId" character varying(150) NOT NULL,
          "ProductVersion" character varying(32) NOT NULL,
          CONSTRAINT "PK___EFMigrationsHistory" PRIMARY KEY ("MigrationId")
      );
Failed executing DbCommand (0ms) [Parameters=[], CommandType='Text', CommandTimeout='30']
CREATE TABLE IF NOT EXISTS "__EFMigrationsHistory" (                                                                                                                                                                                
    "MigrationId" character varying(150) NOT NULL,                                                                                                                                                                                  
    "ProductVersion" character varying(32) NOT NULL,                                                                                                                                                                                
    CONSTRAINT "PK___EFMigrationsHistory" PRIMARY KEY ("MigrationId")                                                                                                                                                               
);                                                                                                                                                                                                                                  
System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'System.Threading.ManualResetEventSlim'.
   at System.Threading.ManualResetEventSlim.Reset()
   at Npgsql.Internal.NpgsqlConnector.ResetCancellation()
   at Npgsql.NpgsqlCommand.ExecuteReader(Boolean async, CommandBehavior behavior, CancellationToken cancellationToken)
   at Npgsql.NpgsqlCommand.ExecuteReader(Boolean async, CommandBehavior behavior, CancellationToken cancellationToken)
   at Npgsql.NpgsqlCommand.ExecuteNonQuery(Boolean async, CancellationToken cancellationToken)
   at Npgsql.NpgsqlCommand.ExecuteNonQuery()
   at Microsoft.EntityFrameworkCore.Storage.RelationalCommand.ExecuteNonQuery(RelationalCommandParameterObject parameterObject)
   at Microsoft.EntityFrameworkCore.Migrations.MigrationCommand.ExecuteNonQuery(IRelationalConnection connection, IReadOnlyDictionary`2 parameterValues)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationCommandExecutor.Execute(IReadOnlyList`1 migrationCommands, IRelationalConnection connection, MigrationExecutionState executionState, Boolean beginTransaction, Boolean commitTransaction, Nullable`1 isolationLevel)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationCommandExecutor.<>c.<ExecuteNonQuery>b__3_1(DbContext _, ValueTuple`6 s)
   at Npgsql.EntityFrameworkCore.PostgreSQL.Storage.Internal.NpgsqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationCommandExecutor.ExecuteNonQuery(IReadOnlyList`1 migrationCommands, IRelationalConnection connection, MigrationExecutionState executionState, Boolean commitTransaction, Nullable`1 isolationLevel)
   at Npgsql.EntityFrameworkCore.PostgreSQL.Migrations.Internal.NpgsqlHistoryRepository.Microsoft.EntityFrameworkCore.Migrations.IHistoryRepository.CreateIfNotExists()
   at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.<>c.<Migrate>b__20_0(DbContext _, Migrator migrator)
   at Npgsql.EntityFrameworkCore.PostgreSQL.Storage.Internal.NpgsqlExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.Migrations.Internal.Migrator.Migrate(String targetMigration)
   at Npgsql.EntityFrameworkCore.PostgreSQL.Migrations.Internal.NpgsqlMigrator.Migrate(String targetMigration)
   at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.UpdateDatabase(String targetMigration, String connectionString, String contextType)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabaseImpl(String targetMigration, String connectionString, String contextType)
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.UpdateDatabase.<>c__DisplayClass0_0.<.ctor>b__0()
   at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute(Action action)
Cannot access a disposed object.
Object name: 'System.Threading.ManualResetEventSlim'