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Conversion from PDF to any of the image formats fails with the exception GroupDocs.Conversion.Exceptions.GroupDocsConversionException : Not implemented

Installed package: GroupDocs.Conversion, Version=“20.1.0”

.NET version: netcoreapp3.1

Description: Conversion from PDF to any of the image formats fails with the exception GroupDocs.Conversion.Exceptions.GroupDocsConversionException : Not implemented .

Issue reproduces only inside Docker container, on Windows conversion succeeds. Tested both on Alpine and Debian base images with the same failure. Samples of Dockerfiles are provided below.

Conversion code sample:

Exception thrown:

Error Message:

GroupDocs.Conversion.Exceptions.GroupDocsConversionException : Not implemented.

Stack Trace:

at GroupDocs.Conversion.Converter.Convert[TFileType](SaveDocumentStream document, ConvertedDocumentStream documentCompleted, ConvertOptions`1 convertOptions)

at FileCreator.Converters.Images.PdfToJpegConverter.ConvertToJpeg(Stream source, Int32 width, Int32 height)

Debian Dockerfile:

Alpine Dockerfile:

This topic has been moved to the related forum: https://forum.groupdocs.com/t/conversion-from-pdf-to-any-of-the-image-formats-fails-with-the-exception-groupdocs-conversion-exceptions-groupdocsconversionexception-not-implemented/8154