diff --git a/common/scraper.py b/common/scraper.py
index 89bdb363..02770ab2 100644
--- a/common/scraper.py
+++ b/common/scraper.py
@@ -46,7 +46,7 @@ scraper_registry = {}
 def log_url(func):
     """
     Catch exceptions and log then pass the exceptions.
-    First postion argument of decorated function must be the url.
+    First postion argument (except cls/self) of decorated function must be the url.
     """
     @functools.wraps(func)
     def wrapper(*args, **kwargs):
@@ -54,7 +54,7 @@ def log_url(func):
             return func(*args, **kwargs)
         except Exception as e:
             # log the url
-            logger.error(f"Scrape Failed URL: {args[0]}")
+            logger.error(f"Scrape Failed URL: {args[1]}")
             logger.error(str(e))
             raise e
 
@@ -102,10 +102,10 @@ class AbstractScraper:
 
     @classmethod
     def get_effective_url(cls, raw_url):
-        url = cls.regex.findall(raw_url)[0]
+        url = cls.regex.findall(raw_url)
         if not url:
             raise ValueError("not valid url")
-        return url
+        return url[0]
 
     @classmethod
     def download_page(cls, url, headers):
diff --git a/mastodon/api.py b/mastodon/api.py
index 0de77994..f7a1678d 100644
--- a/mastodon/api.py
+++ b/mastodon/api.py
@@ -4,7 +4,7 @@ import random
 import functools
 from django.core.exceptions import ObjectDoesNotExist
 from boofilsic.settings import MASTODON_TIMEOUT
-from boofilsic.settings import CLIENT_NAME, APP_WEBSITE
+from boofilsic.settings import CLIENT_NAME, APP_WEBSITE, REDIRECT_URIS
 from .models import CrossSiteUserInfo
 
 # See https://docs.joinmastodon.org/methods/accounts/
@@ -98,13 +98,13 @@ def create_app(domain_name):
     payload = {
         'client_name': CLIENT_NAME,
         'scopes': 'read write follow',
-        'redirect_uris': f'{APP_WEBSITE}/users/OAuth2_login/',
+        'redirect_uris': REDIRECT_URIS,
         'website': APP_WEBSITE
     }
 
     from boofilsic.settings import DEBUG
     if DEBUG:
-        payload['redirect_uris'] = 'http://localhost/users/OAuth2_login/'
+        payload['redirect_uris'] = 'http://localhost/users/OAuth2_login/\nurn:ietf:wg:oauth:2.0:oob'
 
     response = post(url, data=payload)
     return response