From f01347c24589bd8ec52dec324c048bc3fa8fa9ba Mon Sep 17 00:00:00 2001
From: Dana Johnson <dana@greengoblin.com>
Date: Sun, 17 May 2026 08:35:31 -0500
Subject: [PATCH] Fix: bypass dev fallback in multi-site environments to
 prevent missing config crash

---
 lib/instance.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/instance.js b/lib/instance.js
index 4bda3db52..0a7ef3711 100644
--- a/lib/instance.js
+++ b/lib/instance.js
@@ -250,9 +250,14 @@ class Instance {
      * @method checkEnvironment
      * @public
      */
-    checkEnvironment() {
+	checkEnvironment() {
+        // Count how many instances this CLI is managing
+        const instances = this.system.globalConfig.get('instances', {});
+        const isMultiSite = Object.keys(instances).length > 1;
+
         if (
             this.system.production &&
+            !isMultiSite &&
             Config.exists(path.join(this.dir, 'config.development.json')) &&
             !Config.exists(path.join(this.dir, 'config.production.json'))
         ) {