Thanks for the module. It doesn't work at all on Drupal 10.4.3. With nothing displayed and the following warnings when saving the block or viewing. I havent tested on any other drupal version.
Warning: Trying to access array offset on value of type null in Drupal\Core\Block\BlockBase->baseConfigurationDefaults() (line 98 of core/lib/Drupal/Core/Block/BlockPluginTrait.php).
Warning: Trying to access array offset on value of type null in Drupal\Core\Block\BlockBase->baseConfigurationDefaults() (line 98 of core/lib/Drupal/Core/Block/BlockPluginTrait.php).Install module and add QR block in block layout.
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I reviewed the following issue on the Drupal version
10.4.3 and PHP version 8.3.13.
It's working fine.
Can you provide detailed steps to replicate the above issue further?
I'll try it on a later version of PHP - I'm running 8.1.27 - which is still supported by 10.4.3.