Environment data

• VS Code version: XXX
• Extension version (available under the Extensions sidebar): 2018.10.0
• OS and version: XXX
• Python version (& distribution if applicable, e.g. Anaconda): XXX
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): XXX
• Relevant/affected Python packages and their versions: XXX

Actual behavior

When trying to run a cell the error message

Cannot read property 'length' of null

appears

Expected behavior

Python interactive window starts up