The tp-stream-writer app crashes in v5 systems when TPG is disabled

[bieryAtFnal]

Here are sample instructions for re-creating the problem. They make use of the sample OKS database in the appmodel repo. They first use the oks_enable_tpg utility to disable TPG in the readout apps. A run with this configuration shows a crash. They then additionally disable the tp-stream-writer app and try a second run. The second run succeeds.

DATE_PREFIX=`date '+%d%b'`
TIME_SUFFIX=`date '+%H%M'`

source /cvmfs/dunedaq.opensciencegrid.org/setup_dunedaq.sh
setup_dbt latest_v5
dbt-create -n NFD_DEV_240918_A9 ${DATE_PREFIX}FDv5Test_${TIME_SUFFIX}
cd ${DATE_PREFIX}FDv5Test_${TIME_SUFFIX}/sourcecode

git clone https://github.com/DUNE-DAQ/appmodel.git -b develop
cd appmodel; git checkout 680f18b515; cd ..
cd ..

dbt-workarea-env
dbt-build -j 12
dbt-workarea-env

mkdir -p rundir/demo_configs

if [[ ! -d rundir/demo_configs/config ]]; then
   cp -Rv sourcecode/appmodel/config rundir/demo_configs/.
fi
if [[ ! -d rundir/demo_configs/test ]]; then
   cp -Rv sourcecode/appmodel/test rundir/demo_configs/.
   cp rundir/demo_configs/test/config/test-session.data.xml rundir/demo_configs/test/config/demo-configs.data.xml
   sed -i 's/test-session/simple-demo-system/'g rundir/demo_configs/test/config/demo-configs.data.xml
fi

if [[ ! -e local_setup ]]; then
cat <<EOF1 > local_setup
if [[ "\`echo \${DUNEDAQ_DB_PATH} | grep demo_configs\`" == "" ]] ; then
   export DUNEDAQ_DB_PATH=\${PWD}/rundir/demo_configs:\${DUNEDAQ_DB_PATH}
fi
EOF1
fi
. ./local_setup

cd rundir

oks_enable_tpg -d -s simple-demo-system ./demo_configs/test/config/demo-configs.data.xml 

killall drunc-controller 2>/dev/null
sleep 5
drunc-unified-shell ssh-standalone test/config/demo-configs.data.xml simple-demo-system boot wait 10 conf wait 3 start 101 enable-triggers wait 10 disable-triggers drain-dataflow stop-trigger-sources stop scrap terminate

echo
echo
echo
tail -33 log_biery_simple-demo-system_tp-stream-writer.log
echo
echo
echo

oks_enable -d -s simple-demo-system ./demo_configs/test/config/demo-configs.data.xml tp-stream-writer

killall drunc-controller 2>/dev/null
sleep 5
drunc-unified-shell ssh-standalone test/config/demo-configs.data.xml simple-demo-system boot wait 10 conf wait 3 start 102 enable-triggers wait 10 disable-triggers drain-dataflow stop-trigger-sources stop scrap terminate

killall drunc-controller 2>/dev/null
echo
echo
echo
ls -alF *.hdf5