Will do, it’s v1.04 of the plugin.

Screenshot is:
https://filebin.net/os7lbc4thslbfaxn

I don’t think they’re errors as such, just debug info from the errorlog() command.

Example just now from a 32MB phpdebug log file – these are generated (I think) every time the post grid is generated:

[id:Elementor\Controls_Stack:private] => 5d2e95af
[active_settings:Elementor\Controls_Stack:private] =>
[parsed_active_settings:Elementor\Controls_Stack:private] =>
[parsed_dynamic_settings:Elementor\Controls_Stack:private] =>
[data:Elementor\Controls_Stack:private] => Array
(
[id] => 5d2e95af
[settings] => Array
(
[_skin] => cards
[classic_meta_separator] => ///
[classic_read_more_text] => Read More »
[cards_posts_per_page] => 4
[cards_thumbnail_size_size] => medium_large
[cards_meta_data] => Array
(
[0] => date
)

[cards_meta_separator] => •
[cards_read_more_text] => Read More »
[cards_show_avatar] =>
[posts_include] => Array
(
[0] => terms
)

[posts_include_term_ids] => Array
(
[0] => 17
)

[cards_badge_bg_color] => #0e004e
[cards_badge_color] => #ffffff
[cards_badge_typography_typography] => custom
[cards_badge_typography_font_family] => Droid Sans
[cards_badge_typography_font_weight] => 500
[cards_title_color] => #A38D65
[cards_title_typography_font_family] => Open Sans
[cards_title_typography_font_size] => Array
(
[unit] => px
[size] => 24
[sizes] => Array
(
)

)