Any PDF is always blank with PostgreSQL DBMS

[Procsiab]

Describe the bug Regardless of the operation that also produces a PDF file, the product is a blank PDF. This happens without any error that I could track down (no Laravel log errors, no errors in the browser console, no errors in the reverse proxy log or the app log). I am running with debug log verbosity, and APP_DEBUG set to true.

Expected behavior The PDF file has some content in it, or some error is shown if it cannot be populated.

Screenshots

Please complete the following information:

• Crater version: 6.0.4
• PHP version: 7.4
• Database type and version: PostgreSQL 14.2

Environment info

• Container: the app is being run with Podman using THIS compose setup, and the crater image is based on Alpine 3.15
• Browser: tested both Firefox 97.0.1 and Chrome 99.0.48

[Procsiab]

Update: PostgreSQL vs MariaDB

I have a follow up to this issue: using the docker.io/amd64/mariadb:10.7.3-focal container image for the DB service, and installing the required dependency in my Alpine-based container image (mariadb-client from the package manager and pdo_mysql with the command docker-php-ext-install), I was not able to reproduce this issue anymore. I believe that the culprit is the DBMS of choice, and that PostgreSQL is causing issues with the PDF generation. If you have any time and this has some priority I'm willing to help diagnose this issue, but I am not familiar with the application's internals and I don;t know where to start looking for something.

[alexandru0-dev]

I have the same issue