Error message

• Notice: Trying to access array offset on value of type bool in ecwid_shopping_cart_showstore() (line 889 of /home/jklgreek/public_html/course/dp10/sites/all/modules/ecwid_shopping_cart/ecwid_shopping_cart.module).
• Deprecated function: implode(): Passing glue string after array is deprecated. Swap the parameters in drupal_get_feeds() (line 394 of /home/jklgreek/public_html/course/dp10/includes/common.inc).
• Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in menu_set_active_trail() (line 2394 of /home/jklgreek/public_html/course/dp10/includes/menu.inc).