White space showing syntax errors in preview window on python3.g4 intelijidea

[yonatan...@applitools.com]

Hi All

When I try to use the Antlr4 preview window on intelijIdea (various versions) spaces and indents show up as errors, both when typing input in the window and when reading from a file.

Parsing the file works fine - the error is only in the preview window.

Has anyone else seen this, and can anyone suggest a solution?

Here are a couple of screenshots

Thanks