Error 4.8: "c is not a constructor at eval (eval at getInstantiator (ext.axd?v=4.8.2:20)..."

Update to version 4.8 and the page in my grid is not working:
.Plugins(X.FilterHeader())

And the following error comes up:

Uncaught TypeError: c is not a constructor
**** at eval (eval at getInstantiator (ext.axd? v = 4.8.2: 20), <anonymous>: 3: 8)
**** at Object.create (ext.axd? v = 4.8.2: 20)
**** at ext.axd? 5b1cd5c9535e44c69df1008536879cf1: 2
**** at Object.invoke (ext.axd? v = 4.8.2: 20)
**** at Object.doInvokeAll (ext.axd? v = 4.8.2: 20)
**** at Object.invokeAll (ext.axd? v = 4.8.2: 20)
**** at Object.handleReady (ext.axd? v = 4.8.2: 20)
**** at ext.axd? v = 4.8.2: 20
**** at Object.elevate (ext.axd? v = 4.8.2: 20)
**** at c (ext.axd? v = 4.8.2: 20)

I also tried using the Calendar of the examples and the same problem occurs, but with the previous version it works.

Please your support.

Thank you

Miguel

Dear, good day. What I did was to recreate a new project with version 4.8.2 and 4.8.3 and everything works ok. Surely the update was not successful. I write to you in case someone happens when you update the version of ext.net.

Thank you,

Miguel R.