diff --git a/.changeset/poor-terms-greet.md b/.changeset/poor-terms-greet.md
new file mode 100644
index 0000000000..1b92d890d0
--- /dev/null
+++ b/.changeset/poor-terms-greet.md
@@ -0,0 +1,5 @@
+---
+'graphql-language-service-server': patch
+---
+
+Add missing `?.` operator in loading config
diff --git a/packages/graphql-language-service-server/src/MessageProcessor.ts b/packages/graphql-language-service-server/src/MessageProcessor.ts
index 3c616548ce..87a751d53a 100644
--- a/packages/graphql-language-service-server/src/MessageProcessor.ts
+++ b/packages/graphql-language-service-server/src/MessageProcessor.ts
@@ -213,7 +213,7 @@ export class MessageProcessor {
     // TODO: eventually we will instantiate an instance of this per workspace,
     // so rootDir should become that workspace's rootDir
     this._settings = { ...settings, ...vscodeSettings };
-    const rootDir = this._settings?.load?.rootDir.length
+    const rootDir = this._settings?.load?.rootDir?.length
       ? this._settings?.load?.rootDir
       : this._rootPath;
     if (settings?.dotEnvPath) {