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Critical Error trying to Print order pdf’s since upgrade to 2.4.7

Since upgrading to 2.4.7 I can no longer print any order pdf’s, which is obviously problematic.
Exception log below but I am not technical enough to know how to fix it!

main.CRITICAL: Error: Call to undefined function MagentoFrameworkFilePdfImageResourcetmpfile() in /home/1125497.cloudwaysapps.com/fxfdjhhsew/public_html/vendor/magento/framework/File/Pdf/ImageResource/ImageFactory.php:69

I am not technical enough to know how to fix this. Any detailed suggestions would be gratefully appreciated