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Qlik Sense mashup


I am a web developer, I build Qlik Sense mashups with capabilities API.

Using Qlik Sense Enterprise November 2021, I get an error When trying to open the mashup in one tab and the Qlik app via hub on another tab.

This is the error I get on the mashup when the mashup is open and I try to open the app from the hub :

"'Connection lost. Make sure that Qlik Sense is running properly. If your session has timed out due to inactivity, refresh to continue working.'"

I get the same error on the hub when the app is open and I try to open the mashup.

This only happens on published apps and does not happen on apps that are in my work.

I checked the same mashup and app on Qlik Sense august 2021 and did not get any errors.

Does anyone know how to fix it? 



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