conformance tests: WorkflowException missing required secondary file (100)

[audrium]

2021-08-30 09:05:13,358 | cwltool | MainThread | INFO | Resolved 'workflow.json#main' to 'file:///var/reana/users/00000000-0000-0000-0000-000000000000/workflows/b63f67bc-2648-468d-bb1e-3fb1c88596f7/workflow.json#main'
Traceback (most recent call last):
  File "/code/reana_workflow_engine_cwl/pipeline.py", line 89, in executor
    for runnable in jobs:
  File "/usr/local/lib/python3.8/site-packages/cwltool/command_line_tool.py", line 846, in job
    builder = self._init_job(job_order, runtimeContext)
  File "/usr/local/lib/python3.8/site-packages/cwltool/process.py", line 910, in _init_job
    builder.bind_input(
  File "/usr/local/lib/python3.8/site-packages/cwltool/builder.py", line 346, in bind_input
    self.bind_input(
  File "/usr/local/lib/python3.8/site-packages/cwltool/builder.py", line 328, in bind_input
    self.bind_input(
  File "/usr/local/lib/python3.8/site-packages/cwltool/builder.py", line 371, in bind_input
    self.bind_input(
  File "/usr/local/lib/python3.8/site-packages/cwltool/builder.py", line 497, in bind_input
    raise WorkflowException(
cwltool.errors.WorkflowException: Missing required secondary file 'ref.fasta.fai' from file object: {
    "class": "File",
    "location": "file:///var/reana/users/00000000-0000-0000-0000-000000000000/workflows/b63f67bc-2648-468d-bb1e-3fb1c88596f7/ref.fasta",
    "size": 12010,
    "basename": "ref.fasta",
    "nameroot": "ref",
    "nameext": ".fasta",
    "secondaryFiles": []
}
ERROR Workflow error, try again with --debug for more information:
Missing required secondary file 'ref.fasta.fai' from file object: {
    "class": "File",
    "location": "file:///var/reana/users/00000000-0000-0000-0000-000000000000/workflows/b63f67bc-2648-468d-bb1e-3fb1c88596f7/ref.fasta",
    "size": 12010,
    "basename": "ref.fasta",
    "nameroot": "ref",
    "nameext": ".fasta",
    "secondaryFiles": []
}
2021-08-30 09:05:15,355 | cwltool | MainThread | ERROR | Workflow error, try again with --debug for more information:
Missing required secondary file 'ref.fasta.fai' from file object: {
    "class": "File",
    "location": "file:///var/reana/users/00000000-0000-0000-0000-000000000000/workflows/b63f67bc-2648-468d-bb1e-3fb1c88596f7/ref.fasta",
    "size": 12010,
    "basename": "ref.fasta",
    "nameroot": "ref",
    "nameext": ".fasta",
    "secondaryFiles": []
}
workflow done

To reproduce:

cwltest --tool /home/amecioni/.virtualenvs/cwl/bin/reana-cwl-runner --test=conformance_test_v1.0.yaml -n100 --basedir /home/amecioni/Documents/tests/common-workflow-language/v1.0   --