Test run fails with message "ERT workflow failed, check the ERT log for more details"

After execution of flownet in assisted history matching mode, using

`flownet ahm assisted_history_matching.yml flownet_output/egg_8_9_10_16`

the execution stops with the following traceback

```
Traceback (most recent call last):
File "/home/as/miniconda3/bin/flownet", line 8, in
sys.exit(main())
File "/home/as/.local/lib/python3.8/site-packages/flownet/_command_line.py", line 295, in main
args.func(args)
File "/home/as/.local/lib/python3.8/site-packages/flownet/_command_line.py", line 90, in flownet_ahm
run_flownet_history_matching(config, args)
File "/home/as/.local/lib/python3.8/site-packages/flownet/ahm/_run_ahm.py", line 969, in run_flownet_history_matching
_set_up_ahm_and_run_ert(network, schedule, parameters, config, args)
File "/home/as/.local/lib/python3.8/site-packages/flownet/ahm/_run_ahm.py", line 68, in _set_up_ahm_and_run_ert
ahm.run_ert(weights=config.ert.ensemble_weights)
File "/home/as/.local/lib/python3.8/site-packages/flownet/ahm/_assisted_history_matching.py", line 104, in run_ert
run_ert_subprocess(
File "/home/as/.local/lib/python3.8/site-packages/flownet/ert/_run_subprocess.py", line 70, in run_ert_subprocess
raise subprocess.SubprocessError(
subprocess.SubprocessError: The ERT workflow failed. Check the ERT log for more details.
```
Kindly suggest steps to successfully demonstrate functionalities of the flownet, with test data.

Thank-you

Run the reported flownet ahm command with the supplied test data and inspect the ERT log referenced by the error. Trace the failure through flownet/ert/_run_subprocess.py, flownet/ahm/_assisted_history_matching.py, and flownet/ahm/_run_ahm.py. Done means assisted history matching completes successfully with the test data, but the issue does not identify a specific expected change.

Written by the indexing model from the issue text.