Added decimalFormat and language tag in currency configuration section.
That section is now:
- currencyName: vault
currencySingle: euro
currencyPlural: euros
decimalFormat: '#.##' languageTag: 'en-US' startingBalance: 0.0
payTax: 0.0
bankEnabled: true
Regenerate config.yml to have decimalFormat and languageTag or simply add them manually