Hi everyone. I have a project, I want to take data from UART and I want to open camera(connected on USB) simultaneously.How can I open them together? Only camera opens when I compile my code.

E:\flutter\.pub-cache\hosted\pub.dev\serial_port_flutter-0.1.0\android\src\main\java\com\example\flutter_serial_port\FlutterSerialPortPlugin.java:16: error: package android.serialport does not exist
import android.serialport.SerialPort;
                         ^
E:\flutter\.pub-cache\hosted\pub.dev\serial_port_flutter-0.1.0\android\src\main\java\com\example\flutter_serial_port\FlutterSerialPortPlugin.java:17: error: package android.serialport does not exist
import android.serialport.SerialPortFinder;
                         ^
E:\flutter\.pub-cache\hosted\pub.dev\serial_port_flutter-0.1.0\android\src\main\java\com\example\flutter_serial_port\FlutterSerialPortPlugin.java:30: error: cannot find symbol
  private SerialPortFinder mSerialPortFinder = new SerialPortFinder();
          ^
  symbol:   class SerialPortFinder
  location: class FlutterSerialPortPlugin
E:\flutter\.pub-cache\hosted\pub.dev\serial_port_flutter-0.1.0\android\src\main\java\com\example\flutter_serial_port\FlutterSerialPortPlugin.java:31: error: cannot find symbol
  protected SerialPort mSerialPort;
            ^
  symbol:   class SerialPort
  location: class FlutterSerialPortPlugin
E:\flutter\.pub-cache\hosted\pub.dev\serial_port_flutter-0.1.0\android\src\main\java\com\example\flutter_serial_port\FlutterSerialPortPlugin.java:30: error: cannot find symbol
  private SerialPortFinder mSerialPortFinder = new SerialPortFinder();
                                                   ^
  symbol:   class SerialPortFinder
  location: class FlutterSerialPortPlugin
E:\flutter\.pub-cache\hosted\pub.dev\serial_port_flutter-0.1.0\android\src\main\java\com\example\flutter_serial_port\FlutterSerialPortPlugin.java:150: error: cannot find symbol
        mSerialPort = new SerialPort(new File(devicePath), baudrate, 0);
                          ^
  symbol:   class SerialPort
  location: class FlutterSerialPortPlugin
6 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':serial_port_flutter:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 41s
Exception: Gradle task assembleDebug failed with exit code 1