[FFmpeg-trac] #5072(undetermined:new): Weird filter error: Not connected to any destination

[FFmpeg]

#5072: Weird filter error: Not connected to any destination
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             Reporter:               |                    Owner:
  michael.heuberger                  |                   Status:  new
                 Type:  defect       |                Component:
             Priority:  normal       |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by cehoyos):

 Sorry but please provide one code block that starts with the command line
 and is followed by the complete, uncut console output.
 If possible, please simplify the command line and please provide the input
 files if {{{-f lavfi -i testsrc -f lavfi -i sine}}} does not allow to
 reproduce the issue.

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Ticket URL: <https://trac.ffmpeg.org/ticket/5072#comment:1>
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