I'm new to the R Shiny app but after a lot of effort, I wrote an app that looks and runs fine when tested using R Studio. It looks like the following (that is how I expect it to look, for example, different tabs appear in the upper panel).
But when I deploy it to the Shiny server, it looks like the following and doesn't work. It also doesn't show me any error. Could someone please tell me why this is happening?
Maybe I'm missing something. Here's the code if you want to take a look: https://github.com/nabil-awan/PTE_Shiny_app