ACF Form code error

Hello, I am having the following issues, which I found in my debug.log.

[25-Sep-2020 18:28:15 UTC] PHP Notice: Constant WP_MAX_MEMORY_LIMIT already defined in /home/u443551283/domains/cuak.online/public_html/wp-config.php on line 75
[25-Sep-2020 18:28:15 UTC] PHP Notice: Trying to access array offset on value of type bool in /home/u443551283/domains/cuak.online/public_html/wp-content/plugins/advanced-custom-fields/includes/acf-field-group-functions.php on line 58
[25-Sep-2020 18:28:15 UTC] PHP Notice: Trying to access array offset on value of type bool in /home/u443551283/domains/cuak.online/public_html/wp-content/plugins/advanced-custom-fields/includes/acf-field-group-functions.php on line 59
[25-Sep-2020 18:28:15 UTC] PHP Notice: Trying to access array offset on value of type bool in /home/u443551283/domains/cuak.online/public_html/wp-content/plugins/advanced-custom-fields/includes/acf-field-group-functions.php on line 59

I do not know how to solve them. Here is the code that supposedly is conflicting:

// Store field group using aliasses to also find via key, ID and name.
$store->set( $field_group[‘key’], $field_group );
$store->alias( $field_group[‘key’], $field_group[‘ID’] );

What should I do? The error is connected to the submission of a Frontend Form coming from the ACF Frontend plugin.

The problem I get is a Server 503 error when I try to submit a “Create a post form”. You can try this yourself by going into the page and pressing the plus button on the bottom right corner.

Kind Regards, Tomas.

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