问运行文档中的cwl包装器时出错

EN

(snakemake) pedro@Gen83-ubuntu:~/projects/sandbox/cwl-test$ snakemake -j12 "mapped/foo.sorted.bam"
Building DAG of jobs...
Using shell: /bin/bash
Provided cores: 12
Rules claiming more threads will be scaled down.
Job stats:
job              count    min threads    max threads
-------------  -------  -------------  -------------
samtools_sort        1              8              8
total                1              8              8

Select jobs to execute...

[Wed Oct 20 11:20:03 2021]
rule samtools_sort:
    input: mapped/foo.unsorted.bam
    output: mapped/foo.sorted.bam
    jobid: 0
    wildcards: sample=foo
    threads: 8
    resources: tmpdir=/tmp

/usr/bin/cwltool 1.0.20180302231433
I'm sorry, I couldn't load this CWL file, try again with --debug for more information.
The error was: mapping values are not allowed here
  in "https://github.com/common-workflow-language/workflows/blob/fb406c95/tools/samtools-sort.cwl", line 137, column 65

rule samtools_sort:
    input:
        input="mapped/{sample}.unsorted.bam"
    output:
        output_name="mapped/{sample}.sorted.bam"
    params:
        threads=lambda wildcards, threads: threads,
        memory="4G"
    threads: 8
    cwl:
        "https://github.com/common-workflow-language/workflows/blob/"
        "fb406c95/tools/samtools-sort.cwl"

(snakemake) pedro@Gen83-ubuntu:~/projects/sandbox/cwl-test$ cwltool --version
/usr/bin/cwltool 1.0.20180302231433
(snakemake) pedro@Gen83-ubuntu:~/projects/sandbox/cwl-test$ snakemake --version
6.9.1