Why having error

# Import modules
import discord
from discord.ext import commands,tasks
import os
import vinted_scraper as vs
import requests
import json
import time

# Create bot instance
bot = commands.Bot(command_prefix='$')

The error is

Traceback (most recent call last):
  File "/home/runner/Vinted-bot/main.py", line 5, in <module>
    import vinted_scraper as vs
ModuleNotFoundError: No module named 'vinted_scraper'

My line 5 is

import vinted_scraper as vs

I’ve edited your code for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.

See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (').

from your shell’s command prompt or terminal you need to install that module:

pip install vinted_scraper