pgAdmin4 7.6 Server "Does not have clipboard access"

Hello list,

unfortunately all users on this server cannot use the clipboard to copy
things from the pgAdmin4. I attached the Server Configuration as
hardcopies because the copy button is not working too.

The Browser is not the problem, tried chrome and firefox and opera, it
seems to be a problem with the installation on the ubuntu 20.04 server.

Any ideas how to solve this?

Thanks in advice    Andreas

--
Dipl. Geoök. Andreas Laggner

Thünen-Institut für Agrarklimaschutz/
Thünen Institute of Climate-Smart Agriculture

Bundesallee 65
D-38116 Braunschweig, Germany

Tel.: ++49 531 596 2636
Fax: ++49 531 596 2699
Email: andreas(dot)laggner(at)thuenen(dot)de

Arbeitsgruppe "Emissionsberichterstattung"/
Working group "Emission Inventories"
Email: emissionsinventare(at)thuenen(dot)de

Das Johann Heinrich von Thünen-Institut,
Bundesforschungsinstitut für Ländliche Räume,
Wald und Fischerei – kurz: Thünen-Institut –
besteht aus 15 Fachinstituten, die in den
Bereichen Ökonomie, Ökologie und Technologie
forschen und die Politik beraten.

The Johann Heinrich von Thünen Institute,
Federal Research Institute for Rural Areas,
Forestry and Fisheries – Thünen Institute in brief –
consists of 15 specialized institutes that
carry out research and provide policy advice
in the fields of economy, ecology and technology.