difficulty in wordpress config

Hello,
I have installed doliconnect 15.0.0 and have installed the wordpress plugin as well.
I am having difficulties in wordpress configuration. Namely i do not understand how to fill the fields up like dolibarr_shop, dolibarr_supplier, etc. the options are pages in wordpress, but should i just create blank pages and select them here?
Also, the main error i am receiving is in the admin management section, where the error is as follows:
stdClass::$fk_soc in /home2//plugins/doliconnect-develop/doliconnect.php on line 281
stdClass::$price_level in /home2//plugins/doliconnect-develop/doliconnect.php on line 284

stdClass::$remise_percent in /home2//wp-content/plugins/doliconnect-develop/doliconnect.php on line 285

Notice: Undefined property: stdClass::$fk_member in /home2//wp-content/plugins/doliconnect-develop/doliconnect.php on line 286

Notice: Undefined property: stdClass::$fk_trainee in /home2//wp-content/plugins/doliconnect-develop/doliconnect.php on line 287

Notice: Undefined property: stdClass::$fk_user in /home2//wp-content/plugins/doliconnect-develop/doliconnect.php on line 288

Notice: Undefined property: stdClass::$fk_order in /home2//wp-content/plugins/doliconnect-develop/doliconnect.php on line 289

Notice: Undefined property: stdClass::$fk_order_nb_item in /home2//wp-content/plugins/doliconnect-develop/doliconnect.php on line 290

Warning: Cannot modify header information - headers already sent by (output started at /home2//wp-content/plugins/doliconnect-develop/doliconnect.php:281) in /home2//wp-includes/functions.php on line 6821

Warning: Cannot modify header information - headers already sent by (output started at /home2//wp-content/plugins/doliconnect-develop/doliconnect.php:281) in /home2//wp-admin/includes/misc.php on line 1310

Warning: Cannot modify header information - headers already sent by (output started at /home2//wp-content/plugins/doliconnect-develop/doliconnect.php:281) in /home2//wp-admin/admin-header.php on line 9

I am not a programmer. Apologies for my lack of knowledge, Any help would be greatly appreciated.