I'm having this same problem. I went to the advanced settings and turned the cache to false then tried again but I'm getting the error:
Downloading pbdirectory
Error(s) downloading pbdirectory: Unable
to connect to servers from URLs provided:
http://mirror1.freepbx.org/modules/packages/pbdirectory/pbdirectory-2.11.0.4.tgz.gpg,http://mirror2.freepbx.org/modules/packages/pbdirectory/pbdirectory-2.11.0.4.tgz.gpg
I know my installation is getting a bit outdated but I'm a small company and my Linux is very limited. With no scripts for the update I've fallen behind. I plan to catch up once my mother finishes her chemo sessions next spring.
In the meanwhile, I"m on Asterisk 1.8.18.0 and FreePBX 12.0.76.2