I've printed the response.content.decode ("utf-8") line and it's empty so that would be the issue. No idea whats happening there, but the response is empty from discord ...

Discord-Webhook-Sender Configurable Python script that sends a configurable amount of messages to every discord webhook specified in its hooks file (hooks.txt by default).

A dozen malicious PyPi packages have been discovered installing malware that modifies the Discord client to become an information-sealing backdoor and stealing data from web browsers and Roblox.

Researchers discovered a simple malware builder designed to steal credentials, then pinging them to Discord webhooks.

The Python Package Index (PyPI) registry has removed several Python packages this week aimed at stealing users' credit card numbers, Discord tokens, and granting arbitrary code execution ...

Discord webhooks are used to automate messages based on activities in other applications: for example, the official documentation describes making a bot that notifies a channel of new GitHub commits.