mavwp dump is broken - TypeError: a bytes-like object is required, not 'str'

[julled]

Issue details

mavwp dump is broken in mavros 1.13.0 . Does it maybe still expect python2?

MAVROS version and platform

Mavros: 1.13.0 ROS: Noetic Ubuntu: raspberry pi os

Autopilot type and version

[x ] ArduPilot ... SITL simulator [ ] PX4

Version: master

Node logs

searchwing@test:~ $ rosrun mavros mavwp dump wp.txt
[ERROR] [1662742151.544002]: bad callback: <function do_dump.<locals>._write_file at 0xb4650340>
Traceback (most recent call last):
  File "/install/lib/python3/dist-packages/rospy/topics.py", line 750, in _invoke_callback
    cb(msg)
  File "/install/lib/mavros/mavwp", line 147, in _write_file
    wps_file.write(args.file, topic.waypoints)
  File "/install/lib/python3/dist-packages/mavros/mission.py", line 105, in write
    writer.writerow((self.file_header ,))
TypeError: a bytes-like object is required, not 'str'

Diagnostics

header: 
  seq: 1828
  stamp: 
    secs: 1662742445
    nsecs: 629264557
  frame_id: ''
status: 
  - 
    level: 0
    name: "mavros: FCU connection"
    message: "connected"
    hardware_id: "serial:///dev/ttyS0:500000"
    values: 
      - 
        key: "Received packets:"
        value: "10808"
      - 
        key: "Dropped packets:"
        value: "0"
      - 
        key: "Buffer overruns:"
        value: "0"
      - 
        key: "Parse errors:"
        value: "0"
      - 
        key: "Rx sequence number:"
        value: "6"
      - 
        key: "Tx sequence number:"
        value: "0"
      - 
        key: "Rx total bytes:"
        value: "4713176"
      - 
        key: "Tx total bytes:"
        value: "31061"
      - 
        key: "Rx speed:"
        value: "3737.000000"
      - 
        key: "Tx speed:"
        value: "21.000000"
  - 
    level: 0
    name: "mavros: GPS"
    message: "3D fix"
    hardware_id: "serial:///dev/ttyS0:500000"
    values: 
      - 
        key: "Satellites visible"
        value: "10"
      - 
        key: "Fix type"
        value: "6"
      - 
        key: "EPH (m)"
        value: "1.21"
      - 
        key: "EPV (m)"
        value: "2.00"
  - 
    level: 0
    name: "mavros: Heartbeat"
    message: "Normal"
    hardware_id: "serial:///dev/ttyS0:500000"
    values: 
      - 
        key: "Heartbeats since startup"
        value: "1246"
      - 
        key: "Frequency (Hz)"
        value: "0.999976"
      - 
        key: "Vehicle type"
        value: "Fixed wing aircraft"
      - 
        key: "Autopilot type"
        value: "ArduPilot"
      - 
        key: "Mode"
        value: "MANUAL"
      - 
        key: "System status"
        value: "Standby"
  - 
    level: 0
    name: "mavros: System"
    message: "Normal"
    hardware_id: "serial:///dev/ttyS0:500000"
    values: 
      - 
        key: "Sensor present"
        value: "0x1361FC3F"
      - 
        key: "Sensor enabled"
        value: "0x1361803F"
      - 
        key: "Sensor health"
        value: "0x1371803F"
      - 
        key: "3D gyro"
        value: "Ok"
      - 
        key: "3D accelerometer"
        value: "Ok"
      - 
        key: "3D magnetometer"
        value: "Ok"
      - 
        key: "absolute pressure"
        value: "Ok"
      - 
        key: "differential pressure"
        value: "Ok"
      - 
        key: "GPS"
        value: "Ok"
      - 
        key: "motor outputs / control"
        value: "Ok"
      - 
        key: "rc receiver"
        value: "Ok"
      - 
        key: "AHRS subsystem health"
        value: "Ok"
      - 
        key: "Terrain subsystem health"
        value: "Ok"
      - 
        key: "Logging"
        value: "Ok"
      - 
        key: "Battery"
        value: "Ok"
      - 
        key: "pre-arm check status. Always healthy when armed"
        value: "Ok"
      - 
        key: "CPU Load (%)"
        value: "0.0"
      - 
        key: "Drop rate (%)"
        value: "0.0"
      - 
        key: "Errors comm"
        value: "0"
      - 
        key: "Errors count #1"
        value: "0"
      - 
        key: "Errors count #2"
        value: "0"
      - 
        key: "Errors count #3"
        value: "0"
      - 
        key: "Errors count #4"
        value: "0"
  - 
    level: 0
    name: "mavros: Battery"
    message: "Normal"
    hardware_id: "serial:///dev/ttyS0:500000"
    values: 
      - 
        key: "Voltage"
        value: "12.59"
      - 
        key: "Current"
        value: "0.0"
      - 
        key: "Remaining"
        value: "100.0"
---

Check ID

searchwing@test:~ $ rosrun mavros checkid

OK. I got messages from 1:1.

---
Received 1686 messages, from 2 addresses
sys:comp   list of messages
  1:1     0, 1, 129, 2, 136, 137, 11020, 147, 22, 152, 24, 27, 29, 30, 32, 33, 163, 36, 164, 165, 168, 42, 178, 65, 193, 74, 111, 241, 116, 125
 255:230   66

[vooon]

Should be fixed in 1.14. Please reopen if i'm wrong.