Error uploading images – Invalid Session
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Hi, we’re seeing a seemingly random problem when creating ads – I can’t find a pattern or easily replicate it. Sometimes when a new ad is created and an image is uploaded, the image doesn’t upload properly and there’s an error saying invalid session, please refresh this page and try again. Sometimes refreshing the page works, sometimes not.
What is causing this? We’re hosted on WPEngine.com…could it be a caching issue? We’ve tried clearing caches etc, but it’s kind of random so hard to test properly. What would be generating this error please? Perhaps we can narrow down on the cause.
Thanks in advance
Lee
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