added library, which was accidentially removed

.gitignore

@@ -9,3 +9,4 @@ __pycache__/
 
 builddate.txt
 db/urls.db-journal
+.vscode/settings.json

main.py

@@ -6,6 +6,7 @@ import os #Used for getting the enviorement variables
 import qrcode #Used to generate the QR
 import base64 #Used to encode the generated QR as base64, to directly insert it into the HTML
 from io import BytesIO #Needed for base64 encoding of the image
+from PIL import Image #Needed for QR generation
 
 app = Flask(__name__)
 domain_to_index = {}