[MacPorts] #44748: Update digikam 3.5.0 to 4.-- produces error:: command execution failed while executing "system -nice 0 $fullcmdstring"

[MacPorts]

#44748: Update digikam 3.5.0 to 4.--  produces error:: command execution failed
while executing "system -nice 0 $fullcmdstring"
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  Reporter:  lllactive@…  |      Owner:  jan@…
      Type:  defect       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.3.1
Resolution:               |   Keywords:
      Port:  digikam      |
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Comment (by ryandesign@…):

 Could you provide a clean main.log please? Without that, we cannot
 diagnose this problem.

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Ticket URL: <https://trac.macports.org/ticket/44748#comment:2>
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