Cannot follow instructions without GCP buttons

[maxwell8888]

Expected Behavior

I am trying to follow this guide, however although I am the owner of a GCP project, I cannot click the button in Step 1, because that behaviour has been disabled by my employer. There are no alternative instructions to follow in this case. I have tried to assume what actions the button would have taken which is: enable the Google Sheets API, then create and download client credentials and save as credentials.json. However on line 43 of the code given in step 3 credentials.installed is called, however the client credentials I created for my GCP project has no "installed" key.

Please can you provide more detailed instructions of how to create the correct credentials.json file.

Actual Behavior

Steps to Reproduce the Problem

Specifications

• Node version (node -v)
• OS (Mac/Linux/Windows)