ESP32 keep rebooting with rosserial

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Hello

I try rosserial with ESP32 on Ubuntu20.04.

but, ESP32 keep rebooting when using rosserial.

The Error is

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:1216
ho 0 tail 12 room 4
load:0x40078000,len:10944
load:0x40080400,len:6388
entry 0x400806b4
assertion "Invalid mbox" failed: file "/home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/lwip/src/api/tcpip.c", line 374, function: tcpip_send_msg_wait_sem
abort() was called at PC 0x400d556b on core 1

ELF file SHA256: 0000000000000000

Backtrace: 0x40085050:0x3ffb1dd0 0x400852cd:0x3ffb1df0 0x400d556b:0x3ffb1e10 0x400ec99f:0x3ffb1e40 0x400ec439:0x3ffb1e70 0x400ec5ec:0x3ffb1e90 0x400e47d0:0x3ffb1ed0 0x400d26be:0x3ffb1ef0 0x400d20be:0x3ffb1f40 0x400d1c01:0x3ffb1f70 0x400d31ce:0x3ffb1fb0 0x400862de:0x3ffb1fd0

I don't know why this error.

The skech is below.

#include <ros.h>
#include <std_msgs/String.h>


ros::NodeHandle  nh;

std_msgs::String str_msg;
ros::Publisher chatter("chatter", &str_msg);

char hello[13] = "hello world!";

    void setup()
    {
      nh.initNode();
      nh.advertise(chatter);
    }

    void loop()
    {
      str_msg.data = hello;
      chatter.publish( &str_msg );
      nh.spinOnce();
      delay(1000);
    }

Thanks.