heidelpay plugin: No email is sent to shopper after transaction confirmation

[rolandlaich]

The following situation is given:
- VM 3.6.3.10163
- Payment method: heidelpay plugin of where is selected: credit card
- Defined order status after transaction fulfilment confirmation via heidelpay API is "confirmed"
- Defined "default Order Status to send email to shopper" is among others: "confirmed"
- As a result the email to shop owner/vendor is sent but no email is sent to shopper

[Jörgen]

Check if PDF invoice is correct created. Your TCPDF install may be out of sync, wrong version, overwritten by other plugins etc.

Jörgen @ Kreativ Fotografi

[rolandlaich]

Thank you for the hints concerning TCPDF.
So I looked up my installation:

\administrator\components\com_tcpdf is version TCPDF 6.2.26
\libraries\vendor\tecnickcom\tcpdf\tcpdf.php is of same version 6.2.26 despite changelog says: version 6.2.25

This follows the package_or_extract installation packages of my installed version VM 3.6.3.10163. The latest package 3.6.3.10179 includes the same versions.

\components\com_tcpdf is empty (huh - is that normally?)

The invoice is generated, so an obstucting pdf generation issue, like described in the "general concepts", is likely not the reason.

Additional info:
When "wire transfer" is selected as payment method (standard plugin) anything goes right: Confirmation email is sent to shopper including the generated invoice and an additional bunch of attachments like TOS etc.

[Three_d]

I've the exact same problem.
I use Joomla 3.9.12 and VirtueMart 3.6.2 10159 and installed com_tcpdf_1.0.8.zip from this package.
In the backend I get a HTTP 500 error if I go to [Components] > [TCPDF].
If someone pays with iDeal a PDF should be generated.
This fails and that's why there isn't send an email.
If I want to view an invoice PDF in the backend I go to the selected order and click on the icon in the top right corner.
The invoice can't be generated.

But if I reinstall tcpdf_1.0.8.zip from the VirtueMart 3.6.2 10159 package it is possible to generate the invoice PDF in the backend.
I don't know if I can view Pdf's if there are new orders.