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I have a form in wordpress made with plugin Caldera Forms. I used the Filetrip plugin to upload the form files and send the link by e-mail of these files, everything was working properly until from NADA today, I can not upload files.
I configured the plugin to accept only PDF with sizes up to 10M, but I try to attach a PDF with 2M it will not. It stops halfway and the message I see is:
"Failed to open output stream"
How can I solve this problem?