Error happen when show commandtool file

[mmm2006]

I want to show a simple commandlinetool file: class: CommandLineTool cwlVersion: v1.0 $namespaces: sbg: 'https://www.sevenbridges.com/' id: print_string_tool baseCommand:

• python3
• printString.py inputs:
• id: path type: string inputBinding: position: 0 outputs:
• id: output type: string? outputBinding: glob: print_string_output.txt outputEval: '$(self[0].path)' requirements:
• class: InitialWorkDirRequirement listing:
  • entryname: printString.py entry: |

    -- coding: utf-8 --

    if name == "main": input_string = "$(inputs.path)" print(input_string) writable: false
• class: InlineJavascriptRequirement label: print-string-tool stdout: print_string_output.txt

But it fails like this:

Uncaught Error: Cannot subscribe to a non-supported event “step.change”. Supported events are: input.create, input.remove, input.change, input.change.id, io.change.type, output.create, output.remove, output.change.id, argument.create, argument.remove, field.create, field.remove, validate, binding.shellQuote, expression.create, expression.change, expression.serialize, output.metadata.inherit” at EventHub.guard (EventHub.js?b20a:38) at EventHub.on (EventHub.js?b20a:12) at V1CommandLineToolModel.CommandLineToolModel.on (CommandLineToolModel.js?cb43:86) at Workflow.draw (workflow.js?1ee1:122) at new Workflow (workflow.js?1ee1:77) at eval (CwlContainer.vue?e091:152)

I don't know how to fix it?

please help me. Thanks.

my use below version; [email protected] [email protected]