Fatal error when parsing a figure

[Vitaliy-1]

PHP Fatal error: Uncaught ArgumentCountError: DOMNode::appendChild() expects exactly 1 argument, 0 given in C:\docxToJats\src\docx2jats\jats\Figure.php:57
Stack trace:
#0 C:\docxToJats\src\docx2jats\jats\Figure.php(57): DOMNode->appendChild()
#1 C:\docxToJats\src\docx2jats\jats\Document.php(208): docx2jats\jats\Figure->setContent()
#2 C:\docxToJats\src\docx2jats\jats\Document.php(57): docx2jats\jats\Document->extractContent()
#3 C:\docxToJats\docxtojats.php(72): docx2jats\jats\Document->__construct(Object(docx2jats\DOCXArchive))
#4 C:\docxToJats\docxtojats.php(51): writeOutput(‘samples/input/m…’, Array, Array, ‘samples/output/…’, false)
#5 {main}
thrown in C:\docxToJats\src\docx2jats\jats\Figure.php on line 57

for more details, see: https://forum.pkp.sfu.ca/t/docx-to-jats-xml-converter/30224/185