Shipping type error

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Hello, I was trying to create own shipping type method. I created all necessary directories and files, but next time I went to my dashboard's shipping-page, it says "Missing controller file for a shipping type. See Logs for more information".

What did I do wrong? I have tried to Google that problem with no results and I have also deleted that shipping type directory I created, but it still says the same error message.

I have version 5.6.3.2