Upgrade Wizard in Install Tool shows HTML tag <warning>
If a upgrade wizard fails in the Install Tool, this error message is show:
Update failed! <warning>The extension adminpanel can not be downloaded since Composer is used for package management. Please require this extension as package via Composer: "composer require typo3/cms-adminpanel:^9.2"</warning>
I'm not sure about the intended behaviour but I assume that the HTML tag <warning> should be replaced in a later step.
The the affected code is in
typo3/sysext/install/Classes/Updates/AbstractDownloadExtensionUpdate.php, line 113.
In the same file, in lines 94 and 99 there is the HTML tag <error> used. But I haven't tested if these messages are affected as well.