Kotlin Tornadofx FilterList String out of range - kotlin

Question

I am trying to learn tornadofx and i have come across an error i cant figure out how to solve sadly I am using the filterwhen fun and it works great however when i filter the data i get the error handler telling me i have a string out of range and it happens randomly often when i delete a char from the textfield i know the code is a mess :D
enter code hereclass CenterView : View("My View") {
private val ExcelHandler: ExcelController by inject()
private var content = mutableListOf<Products>().observable()
private var rowcounter = SimpleIntegerProperty()
private var oktorun = SimpleBooleanProperty(true)
val table = TableView<Products>()
val data = SortedFilteredList(content).bindTo(table)
private var Accounts = mutableListOf<String>().observable()
override val root = borderpane() {
bottom{
hbox(10) {
style{
padding = box(10.px)
alignment = Pos.CENTER
}
button("Import"){
addClass(Styles.btmDesign)
style{
backgroundColor += Color.PURPLE
fontFamily = "Comic Sans MS"
}
useMaxWidth = true
enableWhen(oktorun)
action {
oktorun.value = false
runAsync {
ExcelHandler.readExcel("data/test.xlsx")
} ui { loadedText ->
content.isEmpty()
content.addAll(loadedText.observable())
rowcounter.value = loadedText.count()
Accounts.addAll(loadedText.map { it.Account }.toList().distinct()
.observable())
oktorun.value = true
}
}
}
hbox{
label("Rows ")
{
style{
fontSize = 20.px
fontWeight = FontWeight.BOLD
}
}
label {
style{
fontSize = 20.px
fontWeight = FontWeight.BOLD
textFill = Color.GREEN
}
bind(rowcounter)
}
}
textfield {
promptText = "Filter"
data.filterWhen(textProperty()) { query, item ->
item.Account!!.contains(query, ignoreCase = true)
}
}
}
left{
listview(Accounts) {
style{
padding = box(20.px)
fontSize = 20.px
fontWeight = FontWeight.BOLD
}
}
}
center{
style{
prefWidth = 100.px
alignment = Pos.CENTER
padding = box(20.px)
}
tableview(data) {
isEditable = true
style{
fontSize =20.px
fontWeight = FontWeight.EXTRA_BOLD
}
column("External", Products::ExternalProperty)
column("ItemRelation", Products::ItemRelationProperty)
column("Account",Products::AccountProperty)
column("Price", Products::AmmountProperty)
column("currency", Products::ValutaProperty)
column("Date", Products::DateProperty)
column("Status", Products::StatusProperty)
enableDirtyTracking()
columnResizePolicy = SmartResize.POLICY
}.multiSelect(true)
}
right {
}
}
}
}
Thank you very much for your time!
the error is
java.lang.StringIndexOutOfBoundsException: String index out of range:
3 at java.lang.String.charAt(String.java:658) at
com.sun.glass.ui.win.WinTextRangeProvider.GetBoundingRectangles(WinTextRangeProvider.java:314)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) at
com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
at java.lang.Thread.run(Thread.java:748)