When there is no modification date it throws a Null Pointer
ERROR info.magnolia.translation.ext.core.helper.XliffTransporterImpl 26.10.2020 14:39:20 -- Cannot convert to Document:
java.lang.NullPointerException: null
at info.magnolia.translation.ext.core.translation.io.writer.AbstractTranslationItemWriter.writeRow(AbstractTranslationItemWriter.java:77) ~[