I am using version 25.2.1 of GroupDocs.Conversion. When I attempt To convert a ICO file To PDF, I get the following stack trace:
java.lang.RuntimeException: class com.groupdocs.conversion.exceptions.FileTypeNotSupported…...conversions**: [epub, mobi, azw3, eps, xps, tex, pdf, xls, xlsx, xlsm, xlsb... xlam, fods, dif, sxc, htm, html, mhtml, mht, doc, docm, docx...