Unable to build prerequisite module: Lingua-Stem (0) Unable to build prerequisite module: Image-ExifTool (0) Unable to build prerequisite module: XML-LibXML (0) Unable to build prerequisite module: HTML-Tidy (1.06) Unable to build prerequisite module: Net-Z3950-ZOOM (0) Unable to build prerequisite module: DBD-mysql (0) Unable to build prerequisite module: XML-LibXSLT (0) Combine could not be built due to the above failed prerequisites.