John the Ripper: Cannot extract hash from PDF because Python keeps opening?

I’m having a really strange issue. I’m attempting to extract a hash from a user-password encrypted .pdf with John the Ripper’s pdf2john tool, but every time I run the command:

c:\...\run\ mypdf.pdf 

My Python IDE (Visual Studio Code) opens up the file and the following appears in the command line:

[main 2020-06-18T10:02:06.775Z] update#setState idle (node:15044) Electron: Loading non context-aware native modules in the renderer process is deprecated and will stop working at some point in the future, please see for more information [main 2020-06-18T10:02:36.776Z] update#setState checking for updates [main 2020-06-18T10:02:36.934Z] update#setState downloading 

Any ideas on how to stop my IDE from opening up and having the command actually work as expected? The latest version of Perl is installed on my machine.