WEBDAV stopped working in CE 7.0.0

After upgrading to CE 7.0.0 webdav stopped working.
I tried to configure it with fastcgi as stated in the official server manual and without fastcgi as stated in the community manual.
Seafdav_error.log says:

2019/05/24 21:20:45 [error] 6403#6403: 1 connect() failed (111: Connection refused) while connecting to upstream, client: 93.239.., server: myname.spdns.org, request: “GET /seafdav HTTP/1.1”, upstream: “fastcgi://127.0.0.1:3000”, host: “myname.spdns.org

or without fastcgi:

2019/05/24 21:18:56 [error] 6258#6258: 1 connect() failed (111: Connection refused) while connecting to upstream, client: 93.239.., server: myname.spdns.org, request: “GET /seafdav HTTP/1.1”, upstream: “http://127.0.0.1:3000/seafdav”, host: “myname.spdns.org

It was working fine with CE 6.3.3.Any help would be much appriciated.