Sometimes only QR code is getting, the texts above the QR code are not printed

[HakiTaakGit]

final ReceiptSectionText receiptText = ReceiptSectionText();
final ReceiptSectionText receiptSecondText = ReceiptSectionText();
receiptText.addText(kioskCode);
receiptText.addSpacer(useDashed: true);
receiptText.addLeftRightText('Pharmacy', 'مقابل');
receiptText.addSpacer();
receiptText.addLeftRightText('Date: $appointmentDate', 'تاريخ');
receiptText.addSpacer();
receiptText.addLeftRightText('Time: $appointmentTime', 'الوقت');
receiptText.addSpacer();
receiptText.addLeftRightText('Token #:', 'الرمز #:');
receiptText.addSpacer();
receiptText.addText(cjNo, size: ReceiptTextSizeType.extraLarge);
receiptText.addSpacer();
receiptText.addText('MRN: $mrn');
receiptText.addSpacer();
await bluePrintPos.printReceiptText(receiptText, paperSize: PaperSize.mm80);
 await bluePrintPos.printQR(cjNo, size: 130);
receiptSecondText.addSpacer();
receiptSecondText.addText('Thank you for your preference');
await bluePrintPos.printReceiptText(receiptSecondText, feedCount: 1, useCut: true);

[HakiTaakGit]

Is there any fixes for this