[wp-trac] [WordPress Trac] #48778: PDF Upload Bug in 5.3

[WordPress Trac]

#48778: PDF Upload Bug in 5.3
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 Reporter:  cranstantinople  |      Owner:  (none)
     Type:  defect (bug)     |     Status:  new
 Priority:  normal           |  Milestone:  Awaiting Review
Component:  General          |    Version:
 Severity:  normal           |   Keywords:
  Focuses:                   |
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 After upgrading to 5.3 I get an error when uploading certain pdf's.  I
 manage multiple sites so I tried uploading the same pdf on a different
 site that wasn't upgraded and it worked.  As soon as I upgraded it gave
 the same error.

 It seems to upload the file itself but it never generates the thumbnails
 correctly.  I've tried reuploading specific files I've uploaded in the
 past and after the upgrade those fail as well.

 "Unexpected response from the server. The file may have been uploaded
 successfully. Check in the Media Library or reload the page."

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Ticket URL: <https://core.trac.wordpress.org/ticket/48778>
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