Fixed Parallel Datahandling test case

9 jobs for develop in 32 minutes and 1 second (queued for 18 minutes and 37 seconds)
Name Stage Failure
failed
pycodegen-integration Test
17.08s call     pygrandchem_tests/test_grandchem_staggered_gpu.ipynb::test_grandchem_staggered_gpu.ipynb
0.01s call pygrandchem_tests/test_benchmark.py::test_benchmark

(11 durations < 0.005s hidden. Use -vv to show these durations.)
=========================== short test summary info ============================
FAILED pygrandchem_tests/test_benchmark.py::test_benchmark - ValueError: Addi...
============= 1 failed, 8 passed, 344 warnings in 75.81s (0:01:15) =============
Cleaning up file based variables
ERROR: Job failed: exit code 1