Failing cache on release

Got the following trouble with release:
: ~ $ ~/my_app/bin/my_app foreground

22:39:22.106 [info]  Running MyApp.Endpoint with Cowboy using http://0.0.0.0:4000

22:39:22.106 [error] Could not find static manifest at "/home/ubuntu/my_app/lib/my_app-1.0.0/priv/static/manifest.json". Run "mix phx.digest" after building your static files or remove the configuration from "config/prod.exs".

22:39:22.122 [info]  Application my_app exited: MyApp.Application.start(:normal, []) returned an error: shutdown: failed to start child: MyApp.Cache
    ** (EXIT) shutdown: failed to start child: :shards_sup
        ** (EXIT) an exception was raised:
            ** (UndefinedFunctionError) function :shards_sup.start_link/1 is undefined (module :shards_sup is not available)
                :shards_sup.start_link(MyApp.Cache.LocalSupervisor)
                (stdlib) supervisor.erl:365: :supervisor.do_start_child/2
                (stdlib) supervisor.erl:348: :supervisor.start_children/3
                (stdlib) supervisor.erl:314: :supervisor.init_children/2
                (stdlib) gen_server.erl:328: :gen_server.init_it/6
                (stdlib) proc_lib.erl:247: :proc_lib.init_p_do_apply/3
{"Kernel pid terminated",application_controller,"{application_start_failure,my_app,{{shutdown,{failed_to_start_child,'Elixir.MyApp.Cache',{shutdown,{failed_to_start_child,shards_sup,{'EXIT',{undef,[{shards_sup,start_link,['Elixir.MyApp.Cache.LocalSupervisor'],[]},{supervisor,do_start_child,2,[{file,\"supervisor.erl\"},{line,365}]},{supervisor,start_children,3,[{file,\"supervisor.erl\"},{line,348}]},{supervisor,init_children,2,[{file,\"supervisor.erl\"},{line,314}]},{gen_server,init_it,6,[{file,\"gen_server.erl\"},{line,328}]},{proc_lib,init_p_do_apply,3,[{file,\"proc_lib.erl\"},{line,247}]}]}}}}}},{'Elixir.MyApp.Application',start,[normal,[]]}}}"}
Kernel pid terminated (application_controller) ({application_start_failure,my_app,{{shutdown,{failed_to_start_child,'Elixir.MyApp.Cache',{shutdown,{failed_to_start_child,shards_sup,{'EXIT',{undef,[{shards_

Crash dump is being written to: erl_crash.dump...done
And i have no clue what's going on.
How can I fix it?
cabol / nebulex_ecto

Failing cache on release #3
