I updated my server to 1.16, only to be greeted with a runtime error regarding letient json.
I reverted back to 1.15.2 and it started up fine.
Later on, I tried 1.16.1, same thing.
After testing a bunch of things, I narrowed it down to the generator-settings string, which contained an old superflat preset string.
Even after updating the string to the latest format in the superflat customization screen, it still throws the error.
It seems it no longer allows this string, and instead tried to find custom world settings instead?
Steps to reproduce:
Start a server jar
set EULA to true
start it again, and see it run fine
shut down the server
change server.properties to specify a flat level type with generator-settings set to any superflat preset string (for example
level-type=flat generator-settings=minecraft:bedrock,86*minecraft:stone,2*minecraft:dirt,minecraft:mycelium;minecraft:forest)
start server, and see a letient json runtime error
Linked issues
Comments 2
Thank you for your report!
We're tracking this issue in MC-186153, so this ticket is being resolved and linked as a duplicate.
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@galaxy_2alex actually, that's the same issue (this is a dupe), michael's comment makes no sense "it requires proper json" while superflat settings aren't json.
Reopen that, close this, and mark that one as confirmed.