TypeError: Failed to fetch dynamically imported module: http://localhost:8080/VAADIN/build/FlowBoots

TypeError: Failed to fetch dynamically imported module: http://localhost:8080/VAADIN/build/FlowBootstrap-feff2646.js

I get this message on start up. I am using vaadin start up. Default configuration, with spring boot and spring data jpa.

This happened to my other project, which was working fine. I am using Eclipse. I even tried netbeans and I got the same problem.

Try cleaning your browser cache

Otherwise try ”mvn clean”

I cleaned browser cache and ran mvn clean. but problem still exists.

I am stuck. anyone?

I downloaded zip from here

https://github.com/vaadin/flow-spring-examples

then I ran “mvn clean install spring-boot:run” in the project root directory.

then http://localhost:8080 in chrome browser

I got the same problem

TypeError: Failed to fetch dynamically imported module: http://localhost:8080/VAADIN/build/FlowBootstrap-feff2646.js

I need help. Anybody has a solution or answer? meanwhile I am going to look for an alternative to Vaadin. Spring + Thymeleaf.

I don’t know why but that repository uses a beta version of Vaadin 24.1
You might have a better time starting from start.vaadin.com

I have already tried from start.vaddin.com. - I get the same error.

Did you try another browser to understand if the problem is in the browser or in the server?

I just tried edge and Firefox. They both worked. Interesting. Chrome does not work even after clearing the browser cache. Any suggestions?

Try Inspector → Application → storage → Clear site data unless you did that

it clears service workers and other stuff

I will try it out. Thanks for your help.

that worked. thanks. life saver