After updating Magento from 2.4.5-p4 to 2.4.6-p2, I hit the error;
TypeError: addslashes(): Argument #1 ($string) must be of type string, null given in /var/www/html/app/vendor/magento/framework/Escaper.php:440
The error relates to an empty welcome message and a patch is now available.
This error is only visible if the store’s Welcome Text is empty in Magento 2.4.6. A quick workaround is to add Welcome Text in Magento admin.
Content > Configuration > pick your scope > Header > Welcome Text
I used Wasim’s Stack overflow suggestion of modifying the core file. As the file is likely to be fixed in a later core release I’m happy for it to written over by a future Magento upgrade.
modify the following block class directly:
vendor\magento\module-theme\Block\Html\Header.php
Change Line #62 & 63:
$this->data[‘welcome’] = $this->escaper->escapeQuote($this->_data[‘welcome’], true); return _($this->_data[‘welcome’]);
To:
return $this->escaper->escapeQuote(__($this->_data[‘welcome’])->render(), true);
ElasticSearch and Maria DB server versions should also be upgraded in Magento 2.4.6 core upgrades, but aren’t the fix for the TypeError: addslashes(): Argument #1 ($string) must be of type string upgrade error.
