From 6e965cbebca91faa99def2180dcfc4754d40ab5f Mon Sep 17 00:00:00 2001
From: filzrev <103790468+filzrev@users.noreply.github.com>
Date: Thu, 29 Feb 2024 10:27:45 +0900
Subject: [PATCH] chore: add detailed error message for specific exceptions

---
 src/Docfx.Build/HostServiceCreator.cs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Docfx.Build/HostServiceCreator.cs b/src/Docfx.Build/HostServiceCreator.cs
index fb6aea1c646..462b5813afc 100644
--- a/src/Docfx.Build/HostServiceCreator.cs
+++ b/src/Docfx.Build/HostServiceCreator.cs
@@ -63,8 +63,12 @@ public virtual (FileModel model, bool valid) Load(
             {
                 if (e is not DocumentException)
                 {
+                    var message = e is ArgumentException or NullReferenceException
+                        ? e.ToString()
+                        : e.Message;
+
                     Logger.LogError(
-                        $"Unable to load file '{file.File}' via processor '{processor.Name}': {e.Message}",
+                        $"Unable to load file '{file.File}' via processor '{processor.Name}': {message}",
                         code: ErrorCodes.Build.InvalidInputFile);
                 }
                 return (null, false);