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Facing issue when running the command php bin/magento setup:upgrade

 The XML in file "D:/wamp64/www/porto/vendor/magento/module-inventory-catalog/etc/communication.xml" is invalid:
Element 'topic', attribute 'is_synchronous': The attribute 'is_synchronous' is not allowed.
Line: 9

Element 'topic', attribute 'is_synchronous': The attribute 'is_synchronous' is not allowed.
Line: 12

Element 'topic', attribute 'is_synchronous': The attribute 'is_synchronous' is not allowed.
Line: 15

Verify the XML and try again.
  • did you changed any thing in core files? – sudo55 Jul 22 at 9:23
  • no i just run command : composer update and after that i am facing that issue – Ali Sultan Khan Jul 22 at 10:06
  • I'm facing the same issue. Let me know if you found something. – Guerra Jul 22 at 21:05
  • For some reason our file is out of date. Check this out raw.githubusercontent.com/magento/magento2/2.3/lib/internal/… is_synchronous is there. And isn't on mine. – Guerra Jul 22 at 21:24
  • What is the final solution? I am also facing the same error. – Kowsigan Atsayam Sep 12 at 15:04

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