Fix catching 404 error from GH API

Author: bartaz

webapp/publisher/cve/cve_views.py

@@ -4,6 +4,7 @@
 from webapp.helpers import api_publisher_session
 from webapp.decorators import login_required
 from webapp.publisher.cve.cve_helper import CveHelper
+from werkzeug.exceptions import NotFound
 
 dashboard = Dashboard(api_publisher_session)
 
@@ -52,7 +53,10 @@ def has_cves(snap_name):
             status_code,
         )
 
-    snap_has_cves = CveHelper.has_cve_data(snap_name)
+    try:
+        snap_has_cves = CveHelper.has_cve_data(snap_name)
+    except NotFound:
+        snap_has_cves = False
     if snap_has_cves:
         return flask.jsonify({"success": True})
     else: