Notice: Undefined index: pts_post_type in…

I was getting the following error/s when creating new posts:

• ( ! ) Notice: Undefined index: pts_post_type in ./wp-content/plugins/post-type-switcher/post-type-switcher.php on line 269
• ( ! ) Notice: Undefined index: pts-nonce-select in ./wp-content/plugins/post-type-switcher/post-type-switcher.php on line 273

(I was also using a custom post type – not sure if this was a part of the issue).

The fix is pretty simple.
I had to add some new code at ~line 263:

public function save_post( $post_id, $post ) {

// begin fix
		// Check PTS field is applicable to this request.
		if( empty($_REQUEST['pts_post_type']) ) return;
// end of fix

		// Post type information.
		$post_type        = $_REQUEST['pts_post_type'];
		$post_type_object = get_post_type_object( $post_type );

Hope this helps someone else ??

https://www.ads-software.com/plugins/post-type-switcher/