diff --git a/lib/utils/sanitization.js b/lib/utils/sanitization.js
--- a/lib/utils/sanitization.js
+++ b/lib/utils/sanitization.js
@@ -134,7 +134,7 @@
 
 function scrambleText(str: string): string {
   const arr = [];
-  for (const char of str) {
+  for (const char of new String(str)) {
     if (char === ' ') {
       arr.push(' ');
       continue;