Can't view Heroku logs - Cannot read property 'run' of undefined <p>I am attempting to deploy a python3 app to heroku. The app has some kind of error and isn't rendering (I see the generic error message in the browser) so I'm trying to troubleshoot via Heroku logs, but I get this error instead of the log output.</p> <pre><code>C:\Users\Kate\AppData\Local\heroku\tmp\heroku-script-182282411:14 cmd.run(ctx) ^ TypeError: Cannot read property 'run' of undefined at Object.&lt;anonymous&gt; (C:\Users\Kate\AppData\Local\heroku\tmp\heroku-script- 182282411:14:4) at Module._compile (module.js:541:32) at Object.Module._extensions..js (module.js:550:10) at Module.load (module.js:456:32) at tryModuleLoad (module.js:415:12) at Function.Module._load (module.js:407:3) at Function.Module.runMain (module.js:575:10) at startup (node.js:160:18) at node.js:445:3 </code></pre> <p>This is on Windows 7 x86, I tried in both windows command prompt and Git Bash and got the same result. I installed the latest Heroku toolbelt with no change. Any thoughts on what to try next?</p>