Resolve "Serverside rendering of preview images"

Closes #66 (closed)

uhepp_org/uhepp_vault/utils.py

@@ -13,6 +13,6 @@ def enqueue_preview_job(uuid):
     try:
         redcon = redis.Redis(host=host, username=username, password=password)
         redcon.lpush(queue, str(uuid))
-    except redis.exceptions.ResponseError as e:
+    except redis.exceptions.RedisError as e:
         print(e)
         pass