Undefined array key "uniqueId" in /includes/blocks/class-container.php:945

[simkoG]

Description

I have noticed that the plugin is generating plenty of warning log entries in the wp_log file (ifWP_DEBUG is enabled, of course).

PHP Warning: Undefined array key "uniqueId" in /wp-content/plugins/generateblocks/includes/blocks/class-container.php on line 945

Steps to reproduce

I am not sure. The error occurs on a pre-release website. If I deactivate Generateblocks, it stops the addition of new entries.

Expected behavior

No log entry.

Actual behavior

...

References:

https://github.com/tomusborne/generateblocks/blob/e0b4e467256bfe7543ef82c395b175c5cabc250f/includes/blocks/class-container.php#L943-L946

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