Na lista se colocar minusculo o filtro nao funciona

Bom dia Quando coloco a query assim com o tipo da lista em minusculo nao funciona:

http://localhost:6000/api/v2.0/Livros?lista=lidos

Dá esse erro:

System.InvalidOperationException: An exception was thrown while attempting to evaluate a LINQ query parameter expression. See the inner exception for more information. To show additional information call 'DbContextOptionsBuilder.EnableSensitiveDataLogging'.
 ---> System.InvalidOperationException: Sequence contains no matching element
   at System.Linq.ThrowHelper.ThrowNoMatchException()
   at System.Linq.Enumerable.First[TSource](IEnumerable`1 source, Func`2 predicate)
   at Alura.ListaLeitura.Modelos.TipoListaLeituraExtensions.ParaTipo(String texto) in C:\projetos\Alura.WebAPI\Alura.WebAPI\Alura.WebAPI.Model\ListaLeitura.cs:line 23
   at lambda_method53(Closure )
   at Microsoft.EntityFrameworkCore.Query.Internal.ParameterExtractingExpressionVisitor.GetValue(Expression expression, String& parameterName)
   --- End of inner exception stack trace ---
   at Microsoft.EntityFrameworkCore.Query.Internal.ParameterExtractingExpressionVisitor.GetValue(Expression expression, String& parameterName)
   at Microsoft.EntityFrameworkCore.Query.Internal.ParameterExtractingExpressionVisitor.Evaluate(Expression expression, Boolean generateParameter)
   at Microsoft.EntityFrameworkCore.Query.Internal.ParameterExtractingExpressionVisitor.Visit(Expression expression)
   at System.Linq.Expressions.ExpressionVisitor.VisitUnary(UnaryExpression node)
   at System.Linq.Expressions.UnaryExpression.Accept(ExpressionVisitor visitor)
   at System.Linq.Expressions.ExpressionVisitor.Visit(Expression node)
   at Microsoft.EntityFrameworkCore.Query.Internal.ParameterExtractingExpressionVisitor.Visit(Expression expression)
   at System.Linq.Expressions.ExpressionVisitor.VisitBinary(BinaryExpression node)
   at Microsoft.EntityFrameworkCore.Query.Internal.ParameterExtractingExpressionVisitor.VisitBinary(BinaryExpression binaryExpression)
   at System.Linq.Expressions.BinaryExpression.Accept(ExpressionVisitor visitor)
   at System.Linq.Expressions.ExpressionVisitor.Visit(Expression node)
   at Microsoft.EntityFrameworkCore.Query.Internal.ParameterExtractingExpressionVisitor.Visit(Expression expression)

O que posso alterar nessa parte do código para resolver isso:

 if (!string.IsNullOrEmpty(filtro.Lista))
                {
                    query = query.Where(l => l.Lista == filtro.Lista.ParaTipo());
                }