diff --git a/compendium_v2/routes/common.py b/compendium_v2/routes/common.py
index 9c4cbc0e9d22a5b5819f55ecda92148cd1ae1f92..2d1b7bae6622acc413270b33ee01a176e759fcc2 100644
--- a/compendium_v2/routes/common.py
+++ b/compendium_v2/routes/common.py
@@ -37,7 +37,9 @@ def after_request(response):
     :param response:
     :return:
     """
-    if response.status_code != 200:
+
+    # direct_passthrough is set to True when the response is a file (e.g serving the front-end)
+    if response.status_code >= 400 and not response.direct_passthrough:
 
         try:
             data = response.data.decode('utf-8')