From 13ccdb4df1395439d4d74867f741ddbe0bcb395c Mon Sep 17 00:00:00 2001
From: Arksine <arksine.code@gmail.com>
Date: Fri, 5 Mar 2021 15:10:53 -0500
Subject: [PATCH] app: raise a clear exception when request arguments fail to
 parse

This error is an indication that a JSON body was sent without the content type set to "application/json".

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>
---
 moonraker/app.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/moonraker/app.py b/moonraker/app.py
index deb76b3..323f3eb 100644
--- a/moonraker/app.py
+++ b/moonraker/app.py
@@ -297,7 +297,12 @@ class DynamicRequestHandler(AuthorizedRequestHandler):
         return {'objects': args}
 
     def parse_args(self):
-        args = self._parse_query()
+        try:
+            args = self._parse_query()
+        except Exception:
+            raise ServerError(
+                "Error Parsing Request Arguments. "
+                "Is the Content-Type correct?")
         content_type = self.request.headers.get('Content-Type', "").strip()
         if content_type.startswith("application/json"):
             try: