ERROR : failed killing old agent process: operation not permitted

when I did fly launch

I got

ERROR [builder  6/17] RUN mix deps.get --only prod                                                                                  0.7s
------
 > [builder  6/17] RUN mix deps.get --only prod:
#14 0.720 ** (File.Error) could not read file "VERSION": no such file or directory
#14 0.720     (elixir 1.13.3) lib/file.ex:355: File.read!/1
#14 0.720     mix.exs:7: Bern.MixProject.project/0
#14 0.720     (mix 1.13.3) lib/mix/project.ex:827: Mix.Project.get_project_config/1
#14 0.720     (mix 1.13.3) lib/mix/project.ex:141: Mix.Project.push/3
#14 0.720     (stdlib 3.17) lists.erl:1267: :lists.foldl/3
------
Error error building: executor failed running [/bin/sh -c mix deps.get --only $MIX_ENV]: exit code: 1

The VERSION file exists in my directory.

I modified it a bit and did
fly deploy
to get

Error failed killing old agent process: operation not permitted

What do to next?

app-name is ‘abhishek’