$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

How to Install Libtiff4 & Libtiff4-dev on Linux Mint 20

November 10, 2022 | By the+gnu+linux+evangelist.

GNU/Linux Mint 20 Installing libtiff4 Guide

Hi! The Tutorial shows you Step-by-Step How to Install libtiff4 and libtiff4-dev Packages on Linux Mint 20.x Ulyana/Ulyssa/Uma/Una LTS GNU/Linux.

Especially relevant: you should try first to Setup the available libtiff5 Library and see if it Fix your issue.

And libtiff4 for Mint 20 is the Tag Image File Format (TIFF) library.

install libtiff4 on ubuntu - Featured
  1. 1. Launching Terminal

    How to QuickStart with Command Line on Mint GNU/Linux

    Bash Shell Mint QuickStart Guide