UE4.25 FactoryCreateNew don't work

thank you very much. Perfect plugin, it works well.

In addition,I want to know if I have to create these 6 file every time I create a new asset?I am not familiar with plugin but i think if i want to create a plugin like yours,I should create 6 files at least.

Also,I try to just copy your code to my projet without using plugin,and It fails to compile.
If possible,can you tell me how to create new asset without using plugin.

the error list is here,and I found that all errors are concentrated on TestModule.cpp