Update app.py

app.py

@@ -57,7 +57,7 @@ def decrypt(passw=None,enc_in=None):
     print (f'encoded string == {enc_in}')
     key = create_key(passw)
     #print (key)
-    fernet = Fernet(key)
+    fernet = Fernet(bytes(key,'utf-8'))
     decMessage = fernet.decrypt(bytes(enc_in,'utf-8')).decode()
     print("decrypted string: ", decMessage)
     try: