ERROR: Required build target 'packagegroup-venus-machine' has no buildable providers.

pokyuser@137d003edf0d:/workdir/3rd-party/victronenergy/venus$ git co remotes/origin/matthijs/fixes
Note: checking out 'remotes/origin/matthijs/fixes'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at dd1fa6b configs/zeus/repos.conf: change meta-swupdate to https
pokyuser@137d003edf0d:/workdir/3rd-party/victronenergy/venus$ git checkout -b LOCAL_matthijs_fixes
Switched to a new branch 'LOCAL_matthijs_fixes'
pokyuser@137d003edf0d:/workdir/3rd-party/victronenergy/venus$ git branch
* LOCAL_matthijs_fixes
  master
pokyuser@137d003edf0d:/workdir/3rd-party/victronenergy/venus$ make fetch
ln -s configs/zeus conf

--------------- sources/bitbake - https://github.com/victronenergy/bitbake.git -------------
Cloning into 'sources/bitbake'...
remote: Enumerating objects: 53163, done.
remote: Total 53163 (delta 0), reused 0 (delta 0), pack-reused 53163
Receiving objects: 100% (53163/53163), 19.20 MiB | 2.23 MiB/s, done.
Resolving deltas: 100% (37159/37159), done.
Branch '1.44_venus' set up to track remote branch '1.44_venus' from 'origin'.
Switched to a new branch '1.44_venus'
Branch '1.44_venus' set up to track remote branch '1.44_venus' from 'origin'.
Set git config log.follow=true, to handle all the recipe renames

--------------- sources/meta-openembedded - https://github.com/victronenergy/meta-openembedded.git -------------
Cloning into 'sources/meta-openembedded'...
remote: Enumerating objects: 141596, done.
remote: Total 141596 (delta 0), reused 0 (delta 0), pack-reused 141596
Receiving objects: 100% (141596/141596), 45.23 MiB | 2.24 MiB/s, done.
Resolving deltas: 100% (82639/82639), done.
Branch 'zeus_venus' set up to track remote branch 'zeus_venus' from 'origin'.
Switched to a new branch 'zeus_venus'
Branch 'zeus_venus' set up to track remote branch 'zeus_venus' from 'origin'.
Set git config log.follow=true, to handle all the recipe renames

--------------- sources/meta-qt4 - https://github.com/victronenergy/meta-qt4.git -------------
Cloning into 'sources/meta-qt4'...
remote: Enumerating objects: 369, done.
remote: Total 369 (delta 0), reused 0 (delta 0), pack-reused 369
Receiving objects: 100% (369/369), 111.26 KiB | 1.48 MiB/s, done.
Resolving deltas: 100% (184/184), done.
Branch 'zeus' set up to track remote branch 'zeus' from 'origin'.
Switched to a new branch 'zeus'
Branch 'zeus' set up to track remote branch 'zeus' from 'origin'.
Set git config log.follow=true, to handle all the recipe renames

--------------- sources/meta-qt5 - https://github.com/victronenergy/meta-qt5.git -------------
Cloning into 'sources/meta-qt5'...
remote: Enumerating objects: 11974, done.
remote: Counting objects: 100% (1/1), done.
remote: Total 11974 (delta 0), reused 0 (delta 0), pack-reused 11973
Receiving objects: 100% (11974/11974), 3.20 MiB | 2.22 MiB/s, done.
Resolving deltas: 100% (8077/8077), done.
Branch 'rocko_venus2' set up to track remote branch 'rocko_venus2' from 'origin'.
Switched to a new branch 'rocko_venus2'
Branch 'rocko_venus2' set up to track remote branch 'rocko_venus2' from 'origin'.
Set git config log.follow=true, to handle all the recipe renames

--------------- sources/meta-swupdate - https://github.com/victronenergy/meta-swupdate.git -------------
Cloning into 'sources/meta-swupdate'...
remote: Enumerating objects: 735, done.
remote: Total 735 (delta 0), reused 0 (delta 0), pack-reused 735
Receiving objects: 100% (735/735), 115.59 KiB | 1.56 MiB/s, done.
Resolving deltas: 100% (279/279), done.
Branch 'rocko_venus' set up to track remote branch 'rocko_venus' from 'origin'.
Switched to a new branch 'rocko_venus'
Branch 'rocko_venus' set up to track remote branch 'rocko_venus' from 'origin'.
Set git config log.follow=true, to handle all the recipe renames

--------------- sources/meta-victronenergy - https://github.com/victronenergy/meta-victronenergy.git -------------
Cloning into 'sources/meta-victronenergy'...
remote: Enumerating objects: 18748, done.
remote: Counting objects: 100% (914/914), done.
remote: Compressing objects: 100% (437/437), done.
remote: Total 18748 (delta 590), reused 744 (delta 450), pack-reused 17834
Receiving objects: 100% (18748/18748), 4.13 MiB | 2.24 MiB/s, done.
Resolving deltas: 100% (10605/10605), done.
Already on 'master'
Your branch is up to date with 'origin/master'.
Branch 'master' set up to track remote branch 'master' from 'origin'.
Set git config log.follow=true, to handle all the recipe renames

--------------- sources/openembedded-core - https://github.com/victronenergy/openembedded-core.git -------------
Cloning into 'sources/openembedded-core'...
remote: Enumerating objects: 397706, done.
remote: Counting objects: 100% (6/6), done.
remote: Compressing objects: 100% (5/5), done.
remote: Total 397706 (delta 1), reused 1 (delta 1), pack-reused 397700
Receiving objects: 100% (397706/397706), 145.89 MiB | 2.24 MiB/s, done.
Resolving deltas: 100% (275375/275375), done.
Branch 'zeus_venus' set up to track remote branch 'zeus_venus' from 'origin'.
Switched to a new branch 'zeus_venus'
Branch 'zeus_venus' set up to track remote branch 'zeus_venus' from 'origin'.
Set git config log.follow=true, to handle all the recipe renames
pokyuser@137d003edf0d:/workdir/3rd-party/victronenergy/venus$ make einstein-machine
export MACHINE=einstein && . ./sources/openembedded-core/oe-init-build-env build sources/bitbake && bitbake packagegroup-venus packagegroup-venus-machine

### Shell environment set up for builds. ###

You can now run 'bitbake <target>'

Common targets are:
    core-image-minimal
    core-image-sato
    meta-toolchain
    meta-ide-support

You can also run generated qemu images with a command like 'runqemu qemux86'.

Other commonly useful commands are:
 - 'devtool' and 'recipetool' handle common recipe tasks
 - 'bitbake-layers' handles common layer tasks
 - 'oe-pkgdata-util' handles common target package tasks
Parsing recipes: 100% |########################################################################################################################################################| Time: 0:01:41
Parsing of 2532 .bb files complete (0 cached, 2532 parsed). 3676 targets, 358 skipped, 0 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies
ERROR: Nothing RPROVIDES 'prodtest' (but /workdir/3rd-party/victronenergy/venus/sources/meta-victronenergy/meta-venus/recipes-packagegroups/packagegroup-venus-machine.bb RDEPENDS on or otherwise requires it)
NOTE: Runtime target 'prodtest' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['prodtest']
ERROR: Required build target 'packagegroup-venus-machine' has no buildable providers.
Missing or unbuildable dependency chain was: ['packagegroup-venus-machine', 'prodtest']

Summary: There were 2 ERROR messages shown, returning a non-zero exit code.
Makefile:147: recipe for target 'einstein-machine' failed
make: *** [einstein-machine] Error 1
pokyuser@137d003edf0d:/workdir/3rd-party/victronenergy/venus$