libtiff4 Ubuntu 18.04 Installation Guide
The Linux Ubuntu tutorial shows you step-by-step How to Install libtiff4 and libtiff4-dev Packages on Ubuntu 18.04 Bionic LTS GNU/Linux – Step by step Tutorial.
Especially relevant: you should try first to Setup the available libtiff5 Library and see if it Fix your issue.
And libtiff4 for Ubuntu Bionic is the Tag Image File Format (TIFF) library.

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1. Launching Terminal
Open a Shell session
Ctrl+Alt+t on desktop
(Press “Enter” to Execute Commands)In case first see: Terminal QuickStart Guide.
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