I hope this is the right place to report bugs with the FTB server installer.
The server downloader for FTB Vanilla Plus 1.1.0 is not working due to the following errors:
serverinstall_18_44
[82/151] Downloaded 'tileids.json' to './config/antiqueatlas/' [691 bytes]...
Jun 09, 2020 3:07:41 AM...