SerialPortAPI.open returns null

[SubroBlack]

[Unhandled promise rejection: TypeError: null is not an object (evaluating 'SerialPortAPI.open')]

Stack trace:

node_modules\react-native-serial-port-api\src\API.js:65:78 in open
 src\components\Trial.jsx:27:18 in handler

I am trying to access port in an android device. But the function returns null.
Here is my code:
const serialPort = await SerialPortAPI.open("/dev/ttyS4", {baudRate: 9600, parity: 0, dataBits: 8, stopbits: 1 });

[RodrigoGCoelhoo]

Did you fix the issue?