[BUG] strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in vendor/chillerlan/php-qrcode/src/QRCode.php on line 218

[GregJohnStewart]

Describe the bug or unexpected behaviour

As title discribes, getting the following error on my php 8.1 setup:

Deprecated: strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in vendor/chillerlan/php-qrcode/src/QRCode.php on line 218

Steps to reproduce the behavior

Run on php 8.1, render

Seems to only occur (breakingly) when have error reporting on:

ini_set('display_errors', '1');
ini_set('display_startup_errors', '1');
error_reporting(E_ALL);

Environment (please complete the following information):

• PHP version/OS: 8.1, Linux
• Library version: 4.3.2

[codemasher]

this bug is fixed in v4.3.3 (#97, #110) - please update to the latest 4.x version.