The extension browserdetection is obsolete from Contao 2.10. Please uninstall and check this new feature in the Contao core.
Die Erweiterung browserdetection wird ab Contao 2.10 nicht mehr benötigt. Bitte nutzen Sie statt dessen folgendes neues Contao-Core-Feature.

Ute Strothotte

“If shapes, colors and the interplay between light and shadow never cease to fascinate us, and if we can devote due mindfulness to our precious materials, then our hands can repeatedly create pieces of jewelry imbued with an aesthetic on a par with that of sculpture. And more: when we wear these pieces, they combine expressiveness and suppleness to become beloved companions throughout our lives.”

Ute Strothotte, goldsmith