diff --git a/Services/server/src/rabbitmq/handler.ts b/Services/server/src/rabbitmq/handler.ts
index 82d4b6b..309f61a 100644
--- a/Services/server/src/rabbitmq/handler.ts
+++ b/Services/server/src/rabbitmq/handler.ts
@@ -154,7 +154,7 @@ async function handleNotFoundRecord(
 
   if (!errorKey.includes(key)) {
     try {
-      Buffer.from(buffer).toString("base64");
+      base64 = Buffer.from(buffer).toString("base64");
     } catch (e) {
       console.warn("[WARN] Cannot extract data from the file.", e);
     }
@@ -217,7 +217,7 @@ async function handleFoundRecord(
 
   if (!errorKey.includes(key)) {
     try {
-      Buffer.from(buffer).toString("base64");
+      base64 = Buffer.from(buffer).toString("base64");
     } catch (e) {
       console.warn("[WARN] Cannot extract data from the file.", e);
     }