[MacPorts] #49284: Error: Failed to verify signature for MacPorts source!

[MacPorts]

#49284: Error: Failed to verify signature for MacPorts source!
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  Reporter:  jianguohsiang82@…  |      Owner:  macports-tickets@…
      Type:  defect             |     Status:  closed
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:  2.3.4
Resolution:  duplicate          |   Keywords:
      Port:                     |
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Comment (by jianguohsiang82@…):

 Replying to [comment:1 mf2k@…]:
 > Duplicate of #49233.

 Yes, but how can I solve this?

 {{{#!python
   sudo port sync
   }}}
 doesn't work

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Ticket URL: <https://trac.macports.org/ticket/49284#comment:2>
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