Thowing custom AuthenticationException inside UsernamePasswordAuthenticationFilter's attemptAuthentication not working when reading in AuthEntryPoint - spring

Question

Custom AuthenticationException:
public class UnauthorizedException extends AuthenticationException {
public UnauthorizedException(final String message) {
super(message);
}
public UnauthorizedException(final String message, final Throwable cause) {
super(message, cause);
}
}
Custom UsernamePasswordAuthenticationFilter's attemptFunction():
public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) {
try {
ObjectMapper mapper = new ObjectMapper();
UserRequestDto userRequestDto = mapper.readValue(request.getInputStream(), UserRequestDto.class);
UsernamePasswordAuthenticationToken authToken = new UsernamePasswordAuthenticationToken(
userRequestDto.getUsername(), userRequestDto.getPassword()
);
return this.authenticationManager.authenticate(authToken);
} catch (IOException ioException) {
throw new ServerErrorException(this.accessor.getMessage("server.error"));
} catch (DisabledException disabledException) {
throw new UnauthorizedException(this.accessor.getMessage("user.disabledAccount"));
} catch (LockedException lockedException) {
throw new UnauthorizedException(this.accessor.getMessage("user.lockedAccount"));
} catch (BadCredentialsException | EntryNotFoundException badCredentialsException) {
throw new UnauthorizedException(this.accessor.getMessage("user.incorrectCredentials"));
} catch (AuthenticationException entryNotFoundException) {
throw new UnauthorizedException(this.accessor.getMessage("user.incorrectCredentials"));
}
}
Custom AuthenticationEntryPoint:
public void commence(HttpServletRequest request, HttpServletResponse response,
AuthenticationException authException) throws IOException, ServletException {
System.out.println(authException.getMessage());
int UNAUTHORIZED = HttpStatus.UNAUTHORIZED.value();
response.setStatus(UNAUTHORIZED);
response.setContentType(MediaType.APPLICATION_JSON_VALUE);
Response<Integer> responseBuild = Response.build(String.valueOf(UNAUTHORIZED), true);
new ObjectMapper().writeValue(response.getOutputStream(), responseBuild);
}
The last catch block inside attemptAuthentication() method throws custom AuthenticationException with custom message ("Incorrect username or password"), but when printing AuthenticationException's message in AuthenticationEntryPoint's commence() method, it prints out "InsufficientAuthenticationException: Full authentication is required to access this resource" (both when given username does and does not exist in the database).
What am I missing here?