Update exception message for missing type mapper

framework/test/Volo.Abp.Mapperly.Tests/Volo/Abp/Mapperly/AbpMapperlyModule_Basic_Tests.cs

@@ -106,9 +106,13 @@ public class AbpMapperlyModule_Basic_Tests : AbpIntegratedTest<MapperlyTestModul
     public void Should_Throw_Exception_If_Mapper_Is_Not_Found()
     {
         var exception = Assert.Throws<AbpException>(() =>_objectMapper.Map<MyEntity, MyClassDto>(new MyEntity()));
-        exception.Message.ShouldBe("No " +
-                                   "Volo.Abp.Mapperly.IAbpMapperlyMapper<Volo.Abp.Mapperly.SampleClasses.MyEntity,Volo.Abp.Mapperly.MyClassDto> or " +
-                                   "Volo.Abp.Mapperly.IAbpReverseMapperlyMapper<Volo.Abp.Mapperly.SampleClasses.MyEntity,Volo.Abp.Mapperly.MyClassDto>" +
-                                   " was found");
+        exception.Message.ShouldBe("No type mapper class was found for the given source and destination types.\n\n" +
+                                   "Mapping types:\n" +
+                                   "MyEntity -> MyClassDto\n" +
+                                   "Volo.Abp.Mapperly.SampleClasses.MyEntity -> Volo.Abp.Mapperly.MyClassDto\n\n" +
+                                   "Define a mapping class to resolve this issue:\n" +
+                                   "   - Use MapperBase<TSource, TDestination> for one-way mapping.\n" +
+                                   "   - Use TwoWayMapperBase<TDestination, TSource> for two-way mapping.\n\n" +
+                                   "See the Mapperly documentation for details:\nhttps://abp.io/docs/latest/framework/infrastructure/object-to-object-mapping#mapperly-integration");
     }
 }