added button disabled

src/client/js/components/Admin/SlackIntegration/AccessTokenSettings.jsx

@@ -41,7 +41,7 @@ const AccessTokenSettings = (props) => {
 
         <div className="row">
           <div className="mx-auto">
-            <button type="button" className="btn btn-outline-secondary text-nowrap mx-1" onClick={discardTokenHandler}>
+            <button type="button" className="btn btn-outline-secondary text-nowrap mx-1" onClick={discardTokenHandler} disabled={!props.accessToken}>
               {t('slack_integration.access_token_settings.discard')}
             </button>
             <button type="button" className="btn btn-primary text-nowrap mx-1" onClick={generateTokenHandler}>

src/client/js/components/Admin/SlackIntegration/SlackIntegration.jsx

@@ -75,9 +75,6 @@ const SlackIntegration = (props) => {
   };
 
   const discardTokenHandler = async() => {
-    if (!accessToken) {
-      return;
-    }
     try {
       const res = await appContainer.apiv3.put('slack-integration/access-token', { deleteAccessToken: true });
       setAccessToken(res.data.accessToken);