Getting the error while updating GWT 2.5.1 to 2.11.0 and sencha GXT 3.1.1 to 4.1

Question

Quick question. Getting below error:

Loading inherited module 'com.sencha.gxt.ui.GXT'
     [java]          Loading inherited module 'com.sencha.gxt.data.Data'
     [java]             Loading inherited module 'com.sencha.gxt.core.Core'
     [java]                [ERROR] Line 107: Value 'ie8' in not a valid value for property 'user.agent'

using GWT 2.11.0, Sencha GXT 4.1 and Java17. So, if any one can help me figuring out, how do I resolve this error?

Answer 1

Downgrade GWT to 2.9.0. GXT 4.1 does not support newer versions of GWT. GWT 2.10.0 and newer dropped support for ie8-, ie9- and ie10-properties. Because of that, the properties are no longer available from GWT.

But keep in mind, there is a vulnerability in older GWT versions when using RPC. See: https://github.com/gwtproject/gwt/issues/9709

This issue is solved in GWT 2.10.1 & 2.11.0.

Another possible workaround might be to provide the properties.

Answer 2

GXT 4.1 does support GWT to 2.9.0. Refer to Docs - https://docs.sencha.com/gxt/4.x/guides/getting_started/Versions.html