vaadin 7.1.0's themes can not be translated into CSS automatically or manua

Flow
1

I have changed productionMode = false, but it not works well.

So I also tried translated it into css manually, failed again.

fellow is wrong infomations:

Exception in thread “main” com.vaadin.sass.internal.expression.exception.ArithmeticException: Illegal arithmetic expression
at com.vaadin.sass.internal.expression.ArithmeticExpressionEvaluator.createExpression(ArithmeticExpressionEvaluator.java:102)
at com.vaadin.sass.internal.expression.ArithmeticExpressionEvaluator.evaluate(ArithmeticExpressionEvaluator.java:132)
at com.vaadin.sass.internal.tree.VariableNode.traverse(VariableNode.java:116)
at com.vaadin.sass.internal.ScssStylesheet.traverse(ScssStylesheet.java:271)
at com.vaadin.sass.internal.ScssStylesheet.traverse(ScssStylesheet.java:280)
at com.vaadin.sass.internal.ScssStylesheet.compile(ScssStylesheet.java:187)
at com.vaadin.sass.SassCompiler.main(SassCompiler.java:57)

2

Replied in your other thread. This thread did not contain enough information to be able to answer the question - e.g. the actual SASS line that caused the problem.