This suggests there is an issue with the code of your app, can you provide a reproducible example (reprex) illustrating your issue? Please have a look at this guide, to see how to create one for a shiny app
I'll try work on a reproducible example and post soon. In the meantime, I've realized it has to do with the libraries used in my app. If there is only a single library loaded everything deploys fine, if there is more than a single package I get the error. So, I think it has to do with deployment and packages … I'll try to create and example code to show error.