i got this error: Failed to execute goal com.vaadin:vaadin-maven-plugin:22.

i got this error:
Failed to execute goal com.vaadin:vaadin-maven-plugin:22.0.3:build-frontend (default) on project app: Could not execute build-frontend goal: Error occured during goal execution:

Failed to find the following files:
- ./comboBoxConnector-es6.js

Locations searched were:
- /home/jeriam/projetos-neo/app-neocrm/frontend in this project
- META-INF/frontend in included JARs
- META-INF/resources/frontend in included JARs

Please, double check that those files exist. If you use a custom directory for your resource files instead of default frontend folder then make sure you it’s correctly configured (e.g. set ‘vaadin.frontend.frontend.folder’ property)

anybody can help?