diff --git a/server.js b/server.js
index 8f4f784c5..ba603d946 100644
--- a/server.js
+++ b/server.js
@@ -417,7 +417,7 @@ app.post("/generate_textgenerationwebui", jsonParser, async function (request, r
 
         try {
             for await (const text of readWebsocket()) {
-                if (text == null) {
+                if (text == null || typeof text !== 'string') {
                     break;
                 }