Failed to Fetch Error and AAS version

[ghmartinsoliveira]

I opened an issue about not being able to load some AAS models (#370), I want to expand on that issue and ask about another one as well. I had tried the example provided in the answer and it was, in fact, one of the only aasx files I was able to open. Although I can't open every time, because a lot of times I get a Failed to Fetch error as soon as I open the UI, wich makes it so I'm not able to open any new AAS or even close the ones that are already opened. Also, there was an aasx file that was produced in my University and I was able to open, but the Submodels wouldn't load at all. I wasn't involved in the creation of this file, so I'm not sure if it was and older version or not, but since the AAS did load I assume it was the newer model, just the submodels were having problem. Do you have any recomendations on what I can do about the Failed to Fetch error that happens frequently? Also, is there any way I can acces the content of these aasx files to see the difference between older and newer models? I would like to maybe change something in the file content so I can just adapt the older models if possible. Or should I just create new ones from scratch?

[aaronzi]

Can you explain in more detail how this failed to fetch error is produced respectively what exactly you are doing? Could you also share a screenshots of the settings in the UI?

I answered the second question in the thread of #370

[ghmartinsoliveira]

I redownloaded Basyx following the get started page and adding every option available and, this time, I am not receiving this error. I think the problem occured because I updated some aasx files that were from an older version, as you explained before, and when I did that, those files would be in (C:\Basyx\aas) and I would receive the error as soon as I opened the UI and I would not be able to upload or delete any other file from the UI. Right now I do have some different questions, first: you answered me on the other thread about how the AASX Package Explorer has a tool that automatically updates aasx files to the newer version, how do I acces this tool? And is this tool able to tell me the version of a given aasx file? I already have the AASX Package Explorer downloaded. Second, I tried to upload an aasx file that opened, so I assume it is the newer version, but the submodels didn't appear, as shown in the screenshots. The first screenshot was an error message I received as I uploaded the file. The second screenshot shows the AAS, but with no submodels. The third screenshot shows the error message I received as I deleted the file.

The submodels appear in the AASX Package Explorer, so I am not really sure why it doesn't appear in the Basyx UI. Also, as requested, the fourth and last screenshot shows the configuration of the UI.