B2B Invoice Rejection

I am Submitting an B2B invoice to Zatca on production and getting error
this response

{“validationResults”:{“infoMessages”:,“warningMessages”:,“errorMessages”:[{“type”:“ERROR”,“code”:null,“category”:“Bad Request”,“message”:“Unable to sign the invoice due to: unable to generate qr code for the provided invoice xml document - Cannot invoke "org.dom4j.Node.getText()" because the return value of "org.dom4j.XPath.selectSingleNode(Object)" is null”,“status”:“ERROR”}],“status”:“ERROR”},“clearanceStatus”:“NOT_CLEARED”,“clearedInvoice”:null}.

Dear @Shzzamx

Thanks for reaching out,

To provide comprehensive support as usual, Can I kindly ask you to share the full body (Request) with the API that you are hitting?

Thanks,
Ibrahem Daoud.