<how can i fix initialized error in springboot on ...

# stackoverflow

[user]

how can i fix initialized error in springboot on kotlin?
im trying make filter about authorization token in springboot on kotlin, below code is filter
@Slf4j
class TokenFilter : Filter {

private val log = LoggerFactory.getLogger(javaClass)


@Throws(IOException::class, ServletException::class)
override fun doFilter(servletRequest: ServletRequest?, servletResponse: ServletResponse?, filterChain: FilterChain) {
val req = servletRequest as HttpServletRequest
val res = servletResponse as HttpServletResponse
val...