When systemd tries to start a service which fails, that is a common error. It has nothing to do with Docker actually. The actual error message must be somewhere earlier in the log and you need to scroll back as far as you can (or use the filter parameters of journalctl) to see the beginning of the error. Than you will probably see a syntax error in the daemon.json or something else. I wish I could reproduce this error and finish my blogpost about it. Maybe if we solve your problem and I can intentionally make the same mistake.
I would start with checking the daemon.json that you changed for changing the storage size. Can you please share the file content here?
When you do, please use maarkdown to format the content. I also edited your previous posts to make them more readable. Example:
```
code here
```
More info here: https://forums.docker.com/t/how-to-format-your-forum-posts/127295#p-202628-dockerfiles-compose-files-logs-and-code-4