Adds compatibility for Ghostscript >=9.50.0 #3
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This is so useful and still works with WP 5.6. However I had difficulties on a server with Ubuntu and Ghostscript 9.50.0. Just received the error `Failed to generate the PDF preview.`. So some debugging clartified that the issue came from Ghostscript. Some more reasearch clarified that since GhostScript 9.50 the SAFER mode has been turned ON by default, resulting in `/invalidfileaccess` errors. This PR adds the WP upload path to the permitted reading list to solve `/invalidfileaccess` errors. However there would bee another solution to pass the sorce PDF path via `--permit-file-read=` but that requires some more changes in the plugin. So this is more a quick solution as the best solution. See more: https://stackoverflow.com/a/61310729/1456459
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This is so useful and still works with WP 5.6. However I had difficulties on a server with Ubuntu and Ghostscript 9.50.0. Just received the error
Failed to generate the PDF preview.. Some debugging showed that the issue comes from Ghostscript and some reasearch clarified that since GhostScript 9.50 the SAFER mode has been turned ON by default, resulting in/invalidfileaccesserrors.This PR adds the WP upload path to the permitted reading list to solve
/invalidfileaccesserrors. However there would bee another solution to pass the sorce PDF path via--permit-file-read=but that requires some more changes in the plugin. So this is more a quick solution as the best solution.See more: https://stackoverflow.com/a/61310729/1456459