empty coords in pagexml crashes import
<TextLine id="line_1546928226299_21956" custom="readingOrder {index:26;}">
<Coords points=""/>
<Baseline points="2115,2699 3485,2697"/>
</TextLine>
<TextLine id="line_1546928226299_21956" custom="readingOrder {index:26;}">
<Coords points=""/>
<Baseline points="2115,2699 3485,2697"/>
</TextLine>