Admin Broken after Update from 6.7.8.2 up to 6.7.9.0 and higher

Shopware 6 (English)
1

Hello,

after I Update shopware higher than 6.7.8.2 I got errors at the admin backend:

	
errors	
0	
code	"0"
status	"500"
title	"Internal Server Error"
detail	'An exception has been thrown during the rendering of a template ("Shopware\\Core\\Framework\\Adapter\\Twig\\Extension\\TwigFeaturesWithInheritanceExtension::include(): Return value must be of type string, Twig\\Markup returned") in "@Administration/administration/index.html.twig" at line 11.'

This happes with the web updater and composer. All extensions (the shopware default one) are deactivated and the theme was selected to the default one.

Did someone has something similiar or know a solution?

2

Do you use Docker? I get the same error setting up a new shop.

3
4

Thx. Downgrading twig fixed this.