After portal update to 10.9 webappbuilder apps doesnt work

[Hcemince]

Hi everyone,

We just updated our portal and server 10.8.1 to 10.9. However, our webappbuilder applications doesn't work after update.

Error is "Cannot read property 'version' of undefined"

[JuhaHaanpera]

Hi there,

Over the weekend, we upgraded ArcGIS Enterprise from version 10.81 to version 10.91. Numerous custom WebApplications had broken down during the upgrade. Webapps gave an error message at startup: Cannot read properties of undefined (reading 'version').

Fortunately, we found this discussion, based on which we understood to fix web applications by manually editing them with the excellent ArcGIS Assistant tool developed by Esri. Now all webapps are running nicely on the Enterprise Portal again.

[JoeHershman]

Thanks for this, saved us on a Friday night upgrade

[EamerDerekCalgary]

Thanks all. This seriously needs to be escalated and addressed in their next patching cycle....

[ChrisRoberts2]

Thanks all .. saved me a lot of headaches too!

[JonDemuth2]

What was the fix?? I see nothing in this article that explains what to do?