Problems while upgrading from vaadin 8.2.1 to 8.6.1

While migrating from vaadin 8.2.1 to 8.6.1, at the moment we tried to rebuild the project, we faced the following error:

[INFO]
 Updating theme VAADIN\themes\vcube2
[ERROR]
 dic 13, 2018 12:51:12 PM com.vaadin.sass.internal.handler.SCSSErrorHandler severe
[ERROR]
 GRAVE: Import '../valo/valo' in 'C:\Users\andre.pinheiro\git\VCubePrototype\VCubeWebUI2\src\main\webapp\VAADIN\themes\vcube2\styles.scss' could not be found
[ERROR]
 dic 13, 2018 12:51:13 PM com.vaadin.sass.internal.handler.SCSSErrorHandler severe
[ERROR]
 GRAVE: Mixin Definition: valo not found
[ERROR]
 Compiling theme "VAADIN\themes\vcube2" failed

Did anyone have a similar problem?

thanks,
Andre Pinheiro

Nevermind… While reviewing the project dependencies, noticed that there where older versions of vaadin present in other pom’s. Removed it and now it is working.