Deprecated Functionality: explode() 2.4.4 with php 8.1

[vpritulin]

Preconditions

1. Magento 1.9.2.4 to Magento 2.4.4 data migration
2. 2.4.4 Data Migration

Steps to reproduce

1. bin/magento migrate:data vendor/magento/data-migration-tool/etc/opensource-to-opensource/1.9.2.2/config.xml

Expected result

1. Successful Data Migration

Actual result

1. Deprecated Functionality: explode(): Passing null to parameter # 2 ($string) of type string is deprecated in /var/www/html/vendor/magento/data-migration-tool/src/Migration/Handler/CleanMultiselect.php on line 55

[m2-assistant[bot]]

Hi @vpritulin. Thank you for your report. To speed up processing of this issue, make sure that you provided sufficient information.

Add a comment to assign the issue: @magento I am working on this

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