diff --git a/.travis.yml b/.travis.yml
index e1d0a77..9dfde96 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ python:
 
 install:
     - pip install flake8
-    - npm install jshint
+    - npm -g install jshint
 
 script:
     - flake8 server/ --max-line-length=85
diff --git a/server/models.py b/server/models.py
index dae1c1a..fa235a6 100644
--- a/server/models.py
+++ b/server/models.py
@@ -23,6 +23,7 @@ def db_session():
     finally:
         session.close()
 
+
 Base = declarative_base()
 Base.query = scoped_session(sessionmaker(autocommit=False,
                                          autoflush=False,
diff --git a/server/settings.py b/server/settings.py
index 030ee55..866c203 100644
--- a/server/settings.py
+++ b/server/settings.py
@@ -10,6 +10,7 @@ def get_env_variable(name, default=None):
         else:
             return default
 
+
 MODEL_DEF_PATH = get_env_variable("MODEL_DEF_PATH")
 PRETRAINED_MODEL_PATH = get_env_variable("PRETRAINED_MODEL_PATH")
 
diff --git a/server/tasks.py b/server/tasks.py
index 8398d3e..3a4d815 100644
--- a/server/tasks.py
+++ b/server/tasks.py
@@ -14,7 +14,7 @@
 
 logger = logging.getLogger(__name__)
 
-TWITTER_RE = re.compile(".+>([a-zA-Z0-9\./]+)<.+")
+TWITTER_RE = re.compile(".+>([a-zA-Z0-9./]+)<.+")
 INSTAGRAM_API = "https://api.instagram.com/oembed/?callback=&url=%s"
 
 
@@ -101,8 +101,8 @@ def img_and_not_szerzo(tag):
     for f in [extract_instagram_urls, extract_twitter_urls, ]:
         try:
             images.extend(f(soup, link))
-        except:
-            logger.error("Error calling '%s' with '%s'", f, link)
+        except Exception:
+            logger.exception("Error calling '%s' with '%s'", f, link)
 
     logger.info("Scanning '%s' finished, found the following images: %s",
                 link, ",".join(images))
diff --git a/server/web.py b/server/web.py
index 130b351..ed913b1 100644
--- a/server/web.py
+++ b/server/web.py
@@ -21,7 +21,7 @@ def home():
 
 @app.route('/get_scores/', methods=['GET', 'POST', ])
 def get_scores():
-    article_urls = request.get_json()
+    article_urls = request.get_json() or []
     key = sha.new("".join(article_urls)).hexdigest()
     result = redis_store.get(key)
     if not result: