Failed to load the widgetset - on random occasions

Hello,

we have a working application but sometimes, this error message comes up: Failed to load the widgetset: …AppWidgetSet.nocache.js
This happens quite rarely, we can not even reliably reproduce the issue. Throttling the network speed to sub-gprs speeds seems to work but in the real scenario, the network definitely could not have been that slow (LTE in one documented case.)
Has any of you experienced an issue like this? If we could present a proper error message asking the user to reload the page, that could be a sufficient fix.

Hi,

Just to make it clear, does this error appear in the production for a successful deployment? And when it happens, the issue is just resolved by refreshing the app? Or does it happen reliably for those users who face this issue?

Yes, deployment is successful, no problem can be noticed most of the time, but sometimes, for random users, the error appears. Not reliably the same users, it could be any user. Reloading resolves the problem.

We are now experiencing the exact same problem. The Failed to load widgetset error is random and has been occuring a few times a week for the past month. The application has been on production for several months with no problems until recently. It was compilied using Vaadin 7.7.9. Did anyone ever figure out how to resolve this issue?

Mark Smith:
We are now experiencing the exact same problem. The Failed to load widgetset error is random and has been occuring a few times a week for the past month. The application has been on production for several months with no problems until recently. It was compilied using Vaadin 7.7.9. Did anyone ever figure out how to resolve this issue?

Did you change your environment, like clustering and load balancing during this time?