QFieldCloud fails to package project with optimized packager

[meyerlor]

When i want to download a project from QFieldCloud the job fails. This is the log from QFieldCloud:

Package Project
11:17:02.634 ENTRYPNT  INFO     Preparing QGIS project for packaging…
11:17:02.634 root      INFO     Loading QGIS project "/tmp/tmpg4ijmecm/files/Test.qgz"…
11:17:02.634 root      INFO     Skip loading QGIS project "/tmp/tmpg4ijmecm/files/Test.qgz", it is already loaded
11:17:02.634 ENTRYPNT  INFO     Getting project area of interest…
11:17:02.637 ENTRYPNT  INFO     Project area of interest is `Polygon ((539167.06000000005587935 5269769.90000000037252903, 549360.41000000003259629 5269769.90000000037252903, 549360.41000000003259629 5278662.20000000018626451, 539167.06000000005587935 5278662.20000000018626451, 539167.06000000005587935 5269769.90000000037252903))` in `` CRS.
11:17:02.637 ENTRYPNT  INFO     Offliner set to "pythonmini"
11:17:02.637 ENTRYPNT  INFO     Packaging…
11:17:02.837 QGSMSGLOG INFO     Layer "Tatsächliche_Nutzung" will use attribute "fid" as a primary key.
11:17:02.836 libqfieldsync INFO     Layer "Tatsächliche_Nutzung" will use attribute "fid" as a primary key.
11:17:02.837 QGSMSGLOG INFO     Layer "Tatsächliche_Nutzung" will use attribute "fid" as a primary key.
11:17:02.837 libqfieldsync INFO     Layer "Tatsächliche_Nutzung" will use attribute "fid" as a primary key.
/usr/lib/python3/dist-packages/osgeo/osr.py:410: FutureWarning: Neither osr.UseExceptions() nor osr.DontUseExceptions() has been explicitly called. In GDAL 4.0, exceptions will be enabled by default.
  warnings.warn(
11:17:03.411 QGSMSGLOG WARNING  Commit errors:
  ERROR: 11925 feature(s) not added - geometry type is not compatible with the current layer.
11:17:03.474 root INFO Stopping QGIS app…
11:17:03.619 root INFO Deleted QGIS app!

This only happens with the new packager - with the old, deprecated one it is working.
This is the Projecturl: https://app.qfield.cloud/a/KleinLeber/Test/
This one of the failed jobs: https://app.qfield.cloud/a/KleinLeber/Test/jobs?id=1562b931-70ad-4b24-9795-97c66267d1e6&job-preview=1
This is the sample project:
QFieldCloud Sample.zip