Create object from a library's Class returns Null

[dangbinghoo]

On Wednesday, 29 May 2019 at 05:04:54 UTC, dangbinghoo wrote:
> On Wednesday, 29 May 2019 at 02:42:23 UTC, Adam D. Ruppe wrote:
>> Object.factory is pretty unreliable and has few supporters 
>> among the developers. I wouldn't suggest relying on it and 
>> instead building your own factory functions.
>
> oh, that's bad news, but the hibernated library is using this 
> feature. what should I do with this?

now we found that, class from a module library won't work, if I 
move gwlib to testobj/source, it works.