Documents to e-mails ESPO 5.2.5

[peterberlin]

Hello,
if you attach files (PDF) from the Documents module to an e-mail, the text appears when you send the e-mail:

Error 500: "must bee string or resource

peter

[yuri]

Hi,

Check whether the file in the document exist (downloadable). There was a bug (fixed) in 5.1.0 that file could be lost.