Update TwitterSecuritySetting.jsx

src/client/js/components/Admin/Security/TwitterSecuritySetting.jsx

@@ -167,7 +167,7 @@ class TwitterSecurityManagement extends React.Component {
 
         <div className="row my-3">
           <div className="col-xs-offset-4 col-xs-5">
-            <button type="button" className="btn btn-primary" disabled={this.state.retrieveError == null} onClick={this.onClickSubmit}>{ t('Update') }</button>
+            <button type="button" className="btn btn-primary" disabled={this.state.retrieveError != null} onClick={this.onClickSubmit}>{ t('Update') }</button>
           </div>
         </div>