[MacPorts] #65809: py39-nbconvert fails to build

[MacPorts]

#65809: py39-nbconvert fails to build
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  Reporter:  agl2015         |      Owner:  (none)
      Type:  defect          |     Status:  new
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.7.2
Resolution:                  |   Keywords:  py39-nbconvert
      Port:  py39-nbconvert  |
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Changes (by agl2015):

 * Attachment "main.log.zip" added.

 main.log

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Ticket URL: <https://trac.macports.org/ticket/65809>
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