mrmike
I am running dokuwiki on a stick under linux using mongoose 5.1 and php 5.5.38 but I also tried upgrading to php 7.1.3. Everything works fine when using localhost:8080 except the tabs and hyperlinks within the media manager window. For these to work I must switch to 127.0.0.1 or <hostname>.
The /etc/hosts file defines localhost, dnslookup works and so does the php script gethostbyname. So I cannot see why localhost fails to resolve/work for just this screen.
Any ideas please?