On version 1.15, I am trying to download an application. When doing so, I get an error that states "Failed to load" and the file does not download. Has anyone else had this happen?
Do you see any console error on the server side when you see this error?
I also experienced this when updating to Developer Edition 1.15 and was unable to download my app. I think it ended up being a custom widget in my extensions inside the client folder. After I deleted that, I was then able to successfully download my app, although the custom widget I deleted wasn't in the app I was trying to download.
I guess there may be errors when compiling your custom widget. When you download the app, ExB server will compile the widgets. Can you run "npm run build:prod" in the client folder to see if there are any errors?
Instead of running npm ci on the client folder, through a series of searches, I have found that running npm ci --legacy-peer-deps is now required for my install due to legacy dependencies. Before that, I did do a full removal and install of 1.15.