diff --git a/package.json b/package.json
index 7dd0353..6136b16 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "For Modpack makers.",
   "repository": "https://github.com/Yesterday17/ZenScript",
   "license": "MIT",
-  "version": "0.1.8",
+  "version": "0.1.9",
   "publisher": "yesterday17",
   "engines": {
     "vscode": "^1.30.0"
diff --git a/server/server.ts b/server/server.ts
index 8642fbd..b5ec06a 100644
--- a/server/server.ts
+++ b/server/server.ts
@@ -196,16 +196,19 @@ async function validateTextDocument(textDocument: TextDocument): Promise<void> {
   const ast: ASTNodeProgram = ZSInterpreter.visit(
     documentCSTs.get(textDocument.uri)
   );
-  connection.console.log(
-    JSON.stringify({
-      type: ast.type,
-      import: ast.import,
-      global: Array.from(ast.global),
-      static: Array.from(ast.static),
-      function: Array.from(ast.function),
-      error: ast.errors,
-    })
-  );
+
+  if (ast) {
+    connection.console.log(
+      JSON.stringify({
+        type: ast.type,
+        import: ast.import,
+        global: Array.from(ast.global),
+        static: Array.from(ast.static),
+        function: Array.from(ast.function),
+        error: ast.errors,
+      })
+    );
+  }
 
   // save errors
   ZSParser.errors.map(error => {