diff --git a/js/src/forum/components/IndexPage.js b/js/src/forum/components/IndexPage.js
index a8cc4b6fb..03d5e64a2 100644
--- a/js/src/forum/components/IndexPage.js
+++ b/js/src/forum/components/IndexPage.js
@@ -164,7 +164,11 @@ export default class IndexPage extends Page {
           icon: 'fas fa-edit',
           className: 'Button Button--primary IndexPage-newDiscussion',
           itemClassName: 'App-primaryControl',
-          onclick: this.newDiscussionAction.bind(this),
+          onclick: () => {
+            // If the user is not logged in, the promise rejects, and a login modal shows up.
+            // Since that's already handled, we dont need to show an error message in the console.
+            return this.newDiscussionAction().catch(() => { });
+          },
           disabled: !canStartDiscussion,
         },
         app.translator.trans(canStartDiscussion ? 'core.forum.index.start_discussion_button' : 'core.forum.index.cannot_start_discussion_button')
diff --git a/js/src/forum/utils/DiscussionControls.js b/js/src/forum/utils/DiscussionControls.js
index 283a8a2eb..4cdc8665b 100644
--- a/js/src/forum/utils/DiscussionControls.js
+++ b/js/src/forum/utils/DiscussionControls.js
@@ -56,22 +56,26 @@ export default {
         'reply',
         !app.session.user || discussion.canReply()
           ? Button.component(
-              {
-                icon: 'fas fa-reply',
-                onclick: this.replyAction.bind(discussion, true, false),
+            {
+              icon: 'fas fa-reply',
+              onclick: () => {
+                // If the user is not logged in, the promise rejects, and a login modal shows up.
+                // Since that's already handled, we dont need to show an error message in the console.
+                return this.replyAction(discussion, true, false).catch(() => { });
               },
-              app.translator.trans(
-                app.session.user ? 'core.forum.discussion_controls.reply_button' : 'core.forum.discussion_controls.log_in_to_reply_button'
-              )
+            },
+            app.translator.trans(
+              app.session.user ? 'core.forum.discussion_controls.reply_button' : 'core.forum.discussion_controls.log_in_to_reply_button'
             )
+          )
           : Button.component(
-              {
-                icon: 'fas fa-reply',
-                className: 'disabled',
-                title: app.translator.trans('core.forum.discussion_controls.cannot_reply_text'),
-              },
-              app.translator.trans('core.forum.discussion_controls.cannot_reply_button')
-            )
+            {
+              icon: 'fas fa-reply',
+              className: 'disabled',
+              title: app.translator.trans('core.forum.discussion_controls.cannot_reply_text'),
+            },
+            app.translator.trans('core.forum.discussion_controls.cannot_reply_button')
+          )
       );
     }