I am working on Magento ver. 2.1.10.
After the Order is successfully placed, the customer is getting a mail regarding the successful order in which a warning error appears:
CSS inlining error: Warning: DOMXPath::query(): Undefined namespace prefix in public_html/vendor/pelago/emogrifier/Classes/Emogrifier.php on line 269 .
What I have already checked :
Put this in the require-dev part of composer.json:
"pelago/emogrifier": "1.0.0 as 0.1.1"
But still issue persists.
Please guide me to fix this issue.
Thanks in Advance.