Can't attach

Can't attach

I am having problems sending attachments. I am trying to attach some PDFs to an email (as I do several times every day) but the progress bar on the attached file gets stuck somewhere between 20%-70% and when I hit send I get the error message 'Attachment upload in progress please after the file upload is over'. I have tried waiting but the file upload never completes.
I have tried attaching in various ways with the same result.


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