I'm getting a similar error when clicking a hyperlink in a PDF document.
An error ribbon appears:
Unable to open external link
Failed to execute child process
“/usr/lib/x86_64-linux-gnu/glib-2.0/gio-launch-desktop” (Permission denied)
** Changed in: evince (Ubuntu)
Status: New => Confirmed
** Changed in: evince (Ubuntu)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1792648
Title:
Can't preview document in evince - Ubuntu 18.10 Failed to execute
child process (Permission Denied)
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