[MacPorts] #63625: Error: Failed to build py39-pyqt5: command execution failed

[MacPorts]

#63625: Error: Failed to build py39-pyqt5: command execution failed
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  Reporter:  tungyuanhsiao  |      Owner:  (none)
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:                 |
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Comment (by reneeotten):

 this seems a duplicate of [ticket:63549], which I presumably solved
 already. Can you please make sure that you have the latest port
 definitions ({{{sudo port selfupdate}}}), clean the port ({{{sudo port
 clean --all py39-pyqt5}}}), and try to install the port again? Also please
 list the versions you have installed for the two SIP ports ({{{sudo port
 -v installed | grep sip}}}).

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Ticket URL: <https://trac.macports.org/ticket/63625#comment:1>
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