From cc9cccd32dd737356cb10ca0beda6c4e2cd4e372 Mon Sep 17 00:00:00 2001
From: Antonio SJ Musumeci <trapexit@spawn.link>
Date: Sun, 4 Jan 2026 22:18:47 -0600
Subject: [PATCH] mergerfs_webui.cpp

---
 src/mergerfs_webui.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/mergerfs_webui.cpp b/src/mergerfs_webui.cpp
index a859141b..c12f997b 100644
--- a/src/mergerfs_webui.cpp
+++ b/src/mergerfs_webui.cpp
@@ -318,7 +318,8 @@ _post_kvs_key(const httplib::Request &req_,
       rv = mergerfs::api::set_kv(mount,key,(std::string)j);
       if(rv < 0)
         {
-
+          j = json::object();
+          j["error"] = strerror(-rv);
         }
       else
         {