We have recently upgraded from Qlik Sense server v2.2.4 to Qlik sense February 2018 version. We did a backup of old applications from Apps folder and we did a complete uninstall and re-install to Feb 2018 version.
When we try to import the app to QMC , we get the below error.
This error happens for apps with section access and without section access. However, we are able to import many other applications.