From d0d8d589450026501dd71458b2e8aa0aa275198d Mon Sep 17 00:00:00 2001
From: Sabir Hassan <sabirbk06@gmail.com>
Date: Wed, 27 Jul 2022 18:30:47 +0500
Subject: [PATCH] fix: add additional check for string type before converting
 data to lower case

---
 src/request/RequestClient.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/request/RequestClient.ts b/src/request/RequestClient.ts
index 66af02f..1a096a4 100644
--- a/src/request/RequestClient.ts
+++ b/src/request/RequestClient.ts
@@ -611,7 +611,10 @@ export const throwIfError = (response: AxiosResponse) => {
         throw new LoginRequiredError(response.data)
       }
 
-      if (response.data.toLowerCase() === 'invalid csrf token!') {
+      if (
+        typeof response.data === 'string' &&
+        response.data.toLowerCase() === 'invalid csrf token!'
+      ) {
         throw new InvalidCsrfError()
       }
       break