Exception message pop-up when clicking on updated feed

I am getting this Exception after a new installation of TTRSS on Ubuntu Server 22.04.
The browsers that encountered it are Chrome and Edge; it does not occur in FireFox.

It occurs on newly registered feeds after building.
It also occurs when clearing cookies or checking in Secret mode.

It may be another problem, but I clicked on the icon to export the registered feeds, but I could not output the file.
Even after clicking the export icon and unchecking the “Include tt-rss settings” checkbox, the window for specifying the output file does not appear.
The export file does not output in Chrome and Edge, but downloads in FireFox.

E_USER_WARNING (512)
client-js:App.js?1650276627:257

Uncaught TypeError: Cannot read properties of undefined (reading ‘body’)
TypeError: Cannot read properties of undefined (reading ‘body’)
at Object.postOpenWindow (http ://xxxxxxxxxx:8280/tt-rss/js/App.js?1650276627:257:15)
at Object.openInNewWindow (http ://xxxxxxxxxx:8280/tt-rss/js/Article.js?1650276627:138:7)
at Object.click (http ://xxxxxxxxxx:8280/tt-rss/js/Headlines.js?1650276627:249:16)
at HTMLSpanElement.onclick (http ://xxxxxxxxxx:8280/tt-rss/#f=3&c=1:1:18)

  1. please follow support topic template when reporting issues.
  2. i’m not seeing docker mentioned in your post, so i’m going to assume a PEBKAC problem unless replicated on the official demo.