$ cwltool workflow-dyn-res.cwl INFO /home/michael/cwltool/env3.8/bin/cwltool 3.0.20200724083110 INFO Resolved 'workflow-dyn-res.cwl' to 'file:///home/michael/cwltool/workflow-dyn-res.cwl' INFO [workflow ] start INFO [workflow ] starting step one INFO [step one] start ERROR Expecting value: line 1 column 1 (char 0) script was: 01 "use strict"; 02 var inputs = {}; 03 var self = null; 04 var runtime = { 05 "tmpdir": "/tmp/tmpcb9aom_8", 06 "outdir": "/tmp/nx2jmuji" 07 }; 08 (function(){return ((inputs.threads_max));})() stdout was: 'undefined' stderr was: '' Traceback (most recent call last): File "/home/michael/cwltool/cwltool/sandboxjs.py", line 411, in execjs return cast(CWLOutputType, json.loads(stdout)) File "/usr/lib/python3.8/json/__init__.py", line 357, in loads return _default_decoder.decode(s) File "/usr/lib/python3.8/json/decoder.py", line 337, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib/python3.8/json/decoder.py", line 355, in raw_decode raise JSONDecodeError("Expecting value", s, err.value) from None json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0) The above exception was the direct cause of the following exception: Traceback (most recent call last): File "cwltool/expression.py", line 377, in do_eval return interpolate( File "cwltool/expression.py", line 293, in interpolate e = evaluator( File "cwltool/expression.py", line 250, in evaluator return execjs( File "/home/michael/cwltool/cwltool/sandboxjs.py", line 413, in execjs raise JavascriptException( cwltool.sandboxjs.JavascriptException: Expecting value: line 1 column 1 (char 0) script was: 01 "use strict"; 02 var inputs = {}; 03 var self = null; 04 var runtime = { 05 "tmpdir": "/tmp/tmpcb9aom_8", 06 "outdir": "/tmp/nx2jmuji" 07 }; 08 (function(){return ((inputs.threads_max));})() stdout was: 'undefined' stderr was: '' ERROR Exception on step 'one' ERROR [step one] Cannot make job: Expression evaluation error: Expecting value: line 1 column 1 (char 0) script was: 01 "use strict"; 02 var inputs = {}; 03 var self = null; 04 var runtime = { 05 "tmpdir": "/tmp/tmpcb9aom_8", 06 "outdir": "/tmp/nx2jmuji" 07 }; 08 (function(){return ((inputs.threads_max));})() stdout was: 'undefined' stderr was: '' INFO [workflow ] completed permanentFail {}