I created a new GWT project by V3 and it can run DevMode to debug.  I will 
compare old project setup with new one's to see the differences 

On Monday, August 9, 2021 at 11:39:47 AM UTC-5 Yibin Li wrote:

> 1. We do not use Maven
> 2. We use GWT 2.5.1 + Firefox  Version 42 (old version)
>
> Currently, we just use right click the project
>
> Debug As -> Web Application The link 
> http://127.0.0.1:8888/My_Project.html?gwt.codesvr=127.0.0.1:9997 is 
> generated. I just need to click the link to debug the My_Project
>
> Now, I upgrated the GWT to 2.9.2 and JDK 11. When I right click the project
>
> The Debug As gives me multiple options
> 1. GWT Compiler
> 2. GWT Development Mode with Jetty
> 3. GWT Legacy Development Mode with Jetty
> 4. GWT Development Mode
>
> I setup Dev Mode on on Chrome
>
> when I click GWT Development Mode with Jetty , Eclipse generates 
> http://127.0.0.1:8888/My_Project.html
>
> When I click GWT Legacy Development Mode with Jetty, eclipse generates
> http://127.0.0.1:8888/My_Project.html?gwt.codesvr=127.0.0.1:9997
>
> But when I put the link in Chrome browser
>
> I got 
>
> HTTP ERROR: 503
>
> Problem accessing /ARIES.html. Reason:
> Service Unavailable
>
> *Powered by Jetty://*
>
>
> When I put http://127.0.0.1:9876/ (Jetty server) 
>
> I got popup window  Can't find any GWT Modules on this page. 
> http://127.0.0.1:9876
>
> How can I make super dev mode work in GWT 2.9
>
> Any help is appreciated 
>
> Yibin LI
>

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