Do not try to none-load youtube URLs. Try to download files only if response was 200

boards/forms/__init__.py

@@ -2,6 +2,7 b' import hashlib'
 import logging
 import re
 import time
+import traceback
 
 import pytz
 from django import forms

boards/models/attachment/downloaders.py

@@ -41,6 +41,7 b' class Downloader:'
         # Get the actual content into memory
         response = requests.get(url, verify=False, stream=True)
 
+        if response.status_code == HTTP_RESULT_OK:
         # Download file, stop if the size exceeds limit
         size = 0
 
@@ -54,7 +55,6 b' class Downloader:'
             validate_file_size(size)
             file.write(chunk)
 
-        if response.status_code == HTTP_RESULT_OK:
             return file
 
 
@@ -85,12 +85,15 b' class YouTubeDownloader(Downloader):'
 class NothingDownloader(Downloader):
     @staticmethod
     def handles(url: str) -> bool:
-        if REGEX_MAGNET.match(url) or REGEX_YOUTUBE_URL.match(url):
+        if REGEX_MAGNET.match(url):
             return True
 
         response_head = requests.head(url, verify=False)
+        if response_head.status_code == HTTP_RESULT_OK:
         content_type = response_head.headers[HEADER_CONTENT_TYPE].split(';')[0]
         return content_type in TYPE_URL_ONLY
+        else:
+            return True
 
     @staticmethod
     def download(url: str):