Can't start my GitHub app

[ivan-developer-01]

I've been building my GitHub app using this tutorial. I did make it to the step Start your server but when I run npm run server, it shows:

> [email protected] server
> node app.js

/path/to/GitHub/ivan-developer-01/meowbot/node_modules/@octokit/core/dist-node/index.js:37
  static {
         ^

SyntaxError: Unexpected token '{'
    at wrapSafe (internal/modules/cjs/loader.js:915:16)
    at Module._compile (internal/modules/cjs/loader.js:963:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at Module.load (internal/modules/cjs/loader.js:863:32)
    at Function.Module._load (internal/modules/cjs/loader.js:708:14)
    at Module.require (internal/modules/cjs/loader.js:887:19)
    at require (internal/modules/cjs/helpers.js:74:18)
    at Object.<anonymous> (/path/to/GitHub/ivan-developer-01/meowbot/node_modules/octokit/dist-node/index.js:32:19)
    at Module._compile (internal/modules/cjs/loader.js:999:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)

I'm using Linux Mint and Node v12.22.9.

How to fix it?

[sreshtech]

The recommended solution is to upgrade your Node.js version to a more recent version that supports static class fields without any additional flags. You can download the latest LTS version from the official Node.js website (https://nodejs.org/). After upgrading, you should be able to run your application without any issues.

[ivan-developer-01]

Thanks, it works!