After installation, I can‘t edit the json file. Not enough quota for user 911
After installatoion, I can‘t eidt the json file. Not enough quota for user 911.
I installed the docker file beeing logged in as admin. I restarted the app and installed the homebridge plugin via terminal. When I try to edit the json.config, I get an error, saying, I have not enough quota (for user 911). I tried to change the ownership to me, but couldn‘t. 
What am I overlooking?
Thanks for your help.