Looks like Kodi changed lots of things on V19 so will need reworked for this version
Attached a custom Kodi project (version 2 January 2021), includes a plugin that can be used either with the project or as a standalone for commands and nowplaying etc.
Requires 3 settings - ip address, jsonserver (normally 9090) and webserver (normally 8080).You can optionally have user and password if your kodi is set that way.
Additionally if you have a tmdb api (free) you can access cast details on the now playing page.
Kodi GridView Plugin Version 2.hrp (103.1 KB)
Please DM any bugs so not to bog down the (already) large thread.