Error packing project Unknown error

I’m no expert but I’m going to assume there is an error within one of your blueprints.Perhaps this is one:

[compiler UE4ASP_HeroTPP_AnimBlueprint] Error This blueprint (self) is not compatible with ’ Meta ', therefore that pin must have a connection.

It looks like there are 6 fatal errors in total. Try to refer to the error log to locate them a bit easier.