Where is the problem ?
Is that a custom formatter that you added there yourself? It is not a file from us. The error just says that the function hjukd() is declared multiple times. If you haven’t created this file yourself then delete it, if you have created it yourself check if maybe the hjukd function exists twice.
I think it points to the incorrect line/function (source maps are probably not up-to-date). The error in the console shows the server action failed and returned a 500 status. The problem is with the invia_email.php. Please check the response from that server call.
Was the tzsbejvt.php located both local and remote, is it possible that your server was compromised? If you didn’t make any changes yourself in the dmxConnectLib then I would advice to delete the whole folder, then go to the server connect panel and save one of the server actions, it should now recreate the dmxConnectLib folder.