Fatally missing blocks and items

This is a general support ticket template.
Please fill in as much detail as possible.

Before Posting:

Java 8 is required to run our modpack. Not having it will cause you to crash on launch.
Mac OS, Windows, and Linux users can download the Java 8 installer for their system from here.

what operating system are you using?: _mac os
how did you install the modpack?: _ConquestReforged Launcher
have you installed Java 8?: _yes
when does the problem happen?: | connecting to the server |
logs/crash-report: _fatally missing blocks or items
I have everything downloaded but when I try to connect to the server it says fatally missing blocks and items. Not sure what to do

please provide your logs - the CR launcher has an ‘upload your log’ button on it’s console