PHP Warning: array_filter() expects parameter 1 to be array, null given

  • We constantly get the following error message when the cron is ran:

    PHP Warning: array_filter() expects parameter 1 to be array, null given in /***/plugins/activecampaign-for-woocommerce/includes/repositories/class-activecampaign-for-woocommerce-ecom-customer-repository.php on line 140

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