[MacPorts] #61782: auctex @12.1: tex.el:0:0: error: wrong-type-argument: (stringp nil)

[MacPorts]

#61782: auctex @12.1: tex.el:0:0: error: wrong-type-argument: (stringp nil)
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  Reporter:  rsmacleod  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:  bigsur
      Port:  auctex     |
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Comment (by jjstickel):

 I doubt this is a problem specific to Big Sur. My guess is that an update
 to Emacs triggered it, but the build for auctex was still good on the
 servers. Anyway, updating `auctex` to 27.3 solved it for me on Catalina,
 see [https://github.com/macports/macports-ports/pull/9912 PR 9912].

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Ticket URL: <https://trac.macports.org/ticket/61782#comment:10>
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