$logo is not initialized in Drupal\endroid_qr_code\Response\QRImageResponse so if $this->file is not set, this error is generated in the log:
Warning: Undefined variable $logo in Drupal\endroid_qr_code\Response\QRImageResponse->generateQrCode() (line 143)
Line 143:
$result = $this->writer->write($qrCode, $logo, $label);
The PNGWriter will accept a null $logo.
Set $logo = null; before the $this->file check on line 131.
Active
4.0
Code
Hello, I'm uploading a patch for this issue for version "drupal/endroid_qr_code": "4.0.x-dev@dev", where the problem is still there.
I'm using the DEV version, because the latest 4.0 version is throwing the following error: ValueError: Path cannot be empty in file_get_contents() (Line 24 in /var/www/html/project/vendor/endroid/qr-code/src/ImageData/LogoImageData.php).