PHP Warning: Undefined array key timeline_container_shema / timeline_item_shema

Getting these warnings in debug.log

[20-Jan-2025 09:03:50 UTC] PHP Warning:  Undefined array key "timeline_container_shema" in .../wp-content/plugins/event-post/inc/class-settings.php on line 508
[20-Jan-2025 09:03:50 UTC] PHP Warning:  Undefined array key "timeline_item_shema" in .../wp-content/plugins/event-post/inc/class-settings.php on line 508

Current code:

504:		<textarea name="ep_settings[<?php echo $args['name']; ?>]"
505:							style="<?php echo isset($args['input-style']) ?  $args['input-style'] : null ?>"
506:							id="<?php echo $args['name']; ?>"
507:							class="regular-text <?php echo isset($args['input-class']) ?  $args['input-class'] : null ?>"
508:							><?php echo EventPost()->settings[$args['name']]; ?></textarea>

When opening settings page of plugin, the two above mentioned array keys passed via $args['name'] when calling function EventPost()->settings[$args['name']]; do not exist in settings.

Suggested fix: Check if array keys exists before use.

Event post 5.9.8, WordPress 6.4.5