Resolving Variable Reference Error (#2903)

src/cli/onefuzz/backend.py

@@ -415,9 +415,6 @@ class Backend:
         if response.status_code // 100 != 2:
             try:
                 json = response.json()
-            except requests.exceptions.JSONDecodeError:
-                pass
-
                 # attempt to read as https://www.rfc-editor.org/rfc/rfc7807
                 if isinstance(json, Dict):
                     title = json.get("title")
@@ -425,6 +422,8 @@ class Backend:
                     raise Exception(
                         f"request did not succeed ({response.status_code}: {title}): {details}"
                     )
+            except requests.exceptions.JSONDecodeError:
+                pass
 
             error_text = str(
                 response.content, encoding="utf-8", errors="backslashreplace"