404 script not found in backend

This plugin has been badly coded.

1) On line 162 of plugin main php file there is a script being added which is a non existent file:
wp_enqueue_script( 'my-script-handle', plugins_url('js/color-pickr.js', __FILE__ ), array( 'wp-color-picker' ), false, true );
It triggers errors in console:

Failed to load resource: the server responded with a status of 404 ()
/wp-content/plugins/wp-carousel-free/js/color-pickr.js?ver=4.7.3

2) A lot of the actions and filters do not have a standardised naming convention. These have all been copy pasted from online tutorials or other plugins. This leads to conflicts with other plugins too.
e.g.: function my_plugin_active_redirect( $plugin ) is a bad function name
All functions should start with something like wcf_
If other people are experiencing conflicts this could be the reason.

3) the plugin adds an invisible menu item under Settings. This should be corrected.
/wp-admin/options-general.php?page=wcf-settings

Author, please can you provide an update?