I have this problem where my cases do not always complete. It's currently about half and half. When it doesn't work, I click the submit button, the blue spinner starts - finishes, then the screen goes blank.
Linked here is a video demonstrating this:
https://drive.google.com/file/d/1cxGrWm ... OrHD9/view
The only error I can see is:
Non-static method CSSBackgroundColor::default_value() should not be called statically, assuming $this from incompatible context
Has anyone experiences a similar problem to this? Most of the dev time for this process was months back - I can no longer remember why tcpdf was not a valid option.