Hey, I was trying to compact my Ext.js project using sencha app build and this error occurred:

[ERR] loading page .../sass/example/theme.html
Failed to load page

[ERR]
[ERR] BUILD FAILED
[ERR] com.sencha.exceptions.ExProcess: phantomjs process exited with code 100
[ERR] at com.sencha.util.MethodInvoker$Arguments.invoke(MethodIn
[ERR] voker.java:175)
[ERR]
[ERR] Total time: 1 minute 22 seconds
[ERR] The following error occurred while executing this line:
...\.sencha\app\build-impl.xml:334: The following error occurred while executing this line:


My sencha cmd version is v6.2.1.29. My EXT JS version is 6.2.0.981. I already have the file theme.html.