This occurs with Aspose.PDF for .Net 22.6.0 running in a Linux container (Alpine) with .net Core 3.1. Just creating a new WatermarkArtifact value throws an error if Arial font is not installed.
Just using the following …...net Core 3.1. Just creating a new WatermarkArtifact...FROM mcr.microsoft.com/dotnet/core/sdk:3.1 AS build-env WORKDIR...