fix path-exists checks for poppler uri format
fix path-exists checks for poppler uri format

bobi32/gummi,bobi32/gummi,alexandervdm/gummi,bobi32/gummi,alexandervdm/gummi,mlda065/gummi,turbopobre/gummi,mlda065/gummi,mlda065/gummi,mlda065/gummi,alexandervdm/gummi,turbopobre/gummi,turbopobre/gummi,turbopobre/gummi,bobi32/gummi