When using version 4.1.1, the stack size will fail after my server restart.

I need to delete the vanilla-defaults file in the data directory, then reload the plugin and the stack will take effect.

Then there will be an error which I need to identify why. Most likely vanilla defaults isn't being downloaded correctly because of your host.

i have the same issue.

Then perhaps you have an error? If 10 thousand people have the issue and not a single one provides adequate information, the problem will remain unsolved. 

My server is located in China, it can't download files from GitHub correctly due to GFW being blocked.
So I put the vanilla-defaults file on my local server and modify the address link in the plugin file.
Then it works to now.