fixed

Sieve/Services/SieveProcessor.cs

@@ -477,9 +477,10 @@ namespace Sieve.Services
                 }
                 outerExpression = Expression.And(outerExpression, innerExpression);
             }
-            return outerExpression == null
+            var data = outerExpression == null
                 ? result
                 : result.Where(Expression.Lambda<Func<TEntity, bool>>(outerExpression, parameterExpression));
+            return data;
         }
         private static string GetDynamicQueryString(TFilterTerm filterTerm, string property, string value)
         {
@@ -570,9 +571,9 @@ namespace Sieve.Services
                     result = ApplyCustomMethod(result, sortTerm.Name, _customSortMethods,
                         new object[]
                         {
-                        result,
-                        useThenBy,
-                        sortTerm.Descending
+                            result,
+                            useThenBy,
+                            sortTerm.Descending
                         }, dataForCustomMethods);
                 }
                 useThenBy = true;
@@ -601,7 +602,15 @@ namespace Sieve.Services
             var maxPageSize = _options.Value.MaxPageSize > 0 ? _options.Value.MaxPageSize : pageSize;
             if (ResultCountBeForeApplyPagination==0)
             {
-                ResultCountBeForeApplyPagination = result.Count();
+                try
+                {
+                    ResultCountBeForeApplyPagination = result != null ? result.Count() : 0;
+                }
+                catch (Exception)
+                {
+                    ResultCountBeForeApplyPagination = 0;
+                }
+               
             }
             
             if (pageSize > 0)