Veelvoorkomende yaml errors
- org.yaml.snakeyaml.reader.StreamReader.update
- java.nio.charset.MalformedInputException: Input length = 1
- org.yaml.snakeyaml.reader.ReaderException: special characters are not allowed
org.bukkit.configuration.InvalidConfigurationException: mapping values are not allowed here
found character '@' that cannot start any token. (Do not use @ for indentation)