host web apps with ajax request in shiny server

I have developed a back-end of a web application into plumber API, hosted locally in rstudio server.
Actually, I move the apps front-end from a web server to shiny server.
the application load correctly in shiny server. But, the ajax request from application in shiny server didn't send request to rstudio server/plumber API .

with a message instead in IE11 : **DOM7011** : The code on this page disabled back and forward caching. For more information, see:

It's just a config issue in shiny server, what i can change in shiny server?
or it's not possible to host an web application in shiny server like a web server, and send (post / get ) ajax request ?

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