🐛 [Bug] Error when forwarding mail with attachment

[indridieinarsson]

🐛 Bug

There is an issue when forwarding mails with attachments, in particular mails from a gmail account
This particular issue arises like this:
I have a gmail account. In it, there is a mail which was forwarded to me from somewhere else. It has an attachment (.pptx file).
Now, if I try to forward this mail further, using cypht, I get the following error in the cypht logs after pressing "Send".

Cypht does not send the mail, and reports an error in the GUI.

cypht-1 | NOTICE: PHP message: PHP Fatal error: Uncaught TypeError: explode(): Argument #2 ($string) must be of type string, array given in /usr/local/share/cypht/modules/smtp/modules.php:1860
cypht-1 | Stack trace:
cypht-1 | #0 /usr/local/share/cypht/modules/smtp/modules.php(1860): explode()
cypht-1 | #1 /usr/local/share/cypht/modules/smtp/modules.php(1872): get_uploaded_files_from_array()
cypht-1 | #2 /usr/local/share/cypht/modules/smtp/modules.php(1930): prepare_draft_mime()
cypht-1 | #3 /usr/local/share/cypht/modules/smtp/modules.php(348): save_imap_draft()
cypht-1 | #4 /usr/local/share/cypht/lib/modules_exec.php(178): Hm_Handler_smtp_save_draft->process()
cypht-1 | #5 /usr/local/share/cypht/lib/modules_exec.php(155): Hm_Module_Exec->run_handler_module()
cypht-1 | #6 /usr/local/share/cypht/lib/dispatch.php(220): Hm_Module_Exec->run_handler_modules()
cypht-1 | #7 /usr/local/share/cypht/lib/dispatch.php(188): Hm_Dispatch->process_request()
cypht-1 | #8 /usr/local/share/cypht/site/index.php(53): Hm_Dispatch->__construct()
cypht-1 | #9 {main}
cypht-1 | thrown in /usr/local/share/cypht/modules/smtp/modules.php on line 1860

Version & Environment

git commit 15ff855
OS: linux - docker image (on linux host)