I have made a block tab plugin, welcome to use

Hello, this is an excellent solution, but I am unable to load it correctly through the NocoBase visual interface - after loading, it appears in Problematic Plugins and cannot be activated.

I did everything correctly (although I am not a programmer, I tried to follow all the instructions), but did not get the desired result. I have provided more details (including a video description of my actions) in this thread: How to correctly build a plugin to load it via the visual interface?, and I have also created an “issue” on the GitHub page for this plugin.

Please advise me on what I might have done wrong and how to fix my mistake.