Crash at startup

[jvoisin]

I get the following errors on Debian GNU/Linux bookworm/sid x86_64, with npm 8.12.1 and nodejs
v16.14.2:

Uncaught ReferenceError: require is not defined
    at index.html:18:13
VM240 renderer_init:89 Electron Security Warning (Insecure Content-Security-Policy) This renderer process has either no Content Security
  Policy set or a policy with "unsafe-eval" enabled. This exposes users of
  this app to unnecessary security risks.

For more information and help, consult
https://electronjs.org/docs/tutorial/security.
This warning will not show up
once the app is packaged.
warnAboutInsecureCSP @ VM240 renderer_init:89