Is there Turkish language support? It gives an error

{
“language”: “tr”,
“fieldvalues”: “merhaba”,
“config”: {
“forceUpperCase”: false,
“ignoreIrregularCaps”: false,
“ignoreFirstCaps”: true,
“ignoreNumbers”: true,
“ignoreUpper”: false,
“ignoreDouble”: false,
“ignoreWordsWithNumbers”: true
}
}

errorMessage:"String index out of range: 4"
errorType:"java.lang.StringIndexOutOfBoundsException"
stackTrace:
0:"java.lang.String.substring(String.java:1963)"
1:"com.jspell.lambda.demo.Hello.loadDictionaryFromS3IfNeeded(Hello.java:67)"
2:"com.jspell.lambda.demo.Hello.handleRequest(Hello.java:280)"
3:“com.jspell.lambda.demo.Hello.handleRequest(Hello.java:1)”