Error message

• Notice: Undefined index: field_desktop_image in include() (line 34 of /var/www/html/web/sites/all/themes/custom/peck_theme/templates/field/field-collection-item--field-main-images-col.tpl.php).
• Notice: Trying to access array offset on value of type null in include() (line 34 of /var/www/html/web/sites/all/themes/custom/peck_theme/templates/field/field-collection-item--field-main-images-col.tpl.php).
• Notice: Trying to access array offset on value of type null in include() (line 34 of /var/www/html/web/sites/all/themes/custom/peck_theme/templates/field/field-collection-item--field-main-images-col.tpl.php).
• Notice: Trying to access array offset on value of type null in include() (line 34 of /var/www/html/web/sites/all/themes/custom/peck_theme/templates/field/field-collection-item--field-main-images-col.tpl.php).