APIv4 - Add warning and fix image
Added a warning inspired by https://chat.civicrm.org/civicrm/pl/jednob1oqin13ky9k9jganntxc
Also fixed a typo causing an image to not load.
Added a warning inspired by https://chat.civicrm.org/civicrm/pl/jednob1oqin13ky9k9jganntxc
Also fixed a typo causing an image to not load.