'RelationalEntityTypeBuilderExtensions.HasCheckConstraint<TEntity>(EntityTypeBuilder<TEntity>, string, string?)' is obsolete: 'Configure this using ToTable(t => t.HasCheckConstraint()) instead.'

'RelationalEntityTypeBuilderExtensions.HasCheckConstraint<TEntity>(EntityTypeBuilder<TEntity>, string, string?)' is obsolete: 'Configure this using ToTable(t => t.HasCheckConstraint()) instead.'

Cannot convert null literal to non-nullable reference type.

'ISystemClock' is obsolete: 'Use TimeProvider instead.'

Non-nullable property 'Memo' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'ArenaProvider' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Costumes' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

Non-nullable property 'Equipments' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable.

'AuthenticationHandler<AuthenticationSchemeOptions>.AuthenticationHandler(IOptionsMonitor<AuthenticationSchemeOptions>, ILoggerFactory, UrlEncoder, ISystemClock)' is obsolete: 'ISystemClock is obsolete, use TimeProvider on AuthenticationSchemeOptions instead.'