Update server settings authLoginCustomMessage to sanitize on save and load

server/utils/htmlSanitizer.js

@@ -5,11 +5,10 @@ const { entities } = require('./htmlEntities')
  *
  * @param {string} html
  * @returns {string}
- * @throws {Error} if input is not a string
  */
 function sanitize(html) {
   if (typeof html !== 'string') {
-    throw new Error('sanitizeHtml: input must be a string')
+    return ''
   }
 
   const sanitizerOptions = {