assert failed: xMBMasterRTUReceiveFSM in FreeRTOS mit Modbus Master von ESP IDF

I (1914922) count_task: RAM left 123640; mb_master_hwm: 1508, count_task_hwm: 20, mqtt_ssl_main_hwm: 6276

I (1915262) MASTER_TEST: Characteristic #0 Data_channel_0 (kW) value = 4531.000000 (0x458d9800) read successful. Restarted: 0

I (1915762) MASTER_TEST: Characteristic #0 Data_channel_0 (kW) value = 4531.000000 (0x458d9800) read successful. Restarted: 0

I (1916262) MASTER_TEST: Characteristic #0 Data_channel_0 (kW) value = 4531.000000 (0x458d9800) read successful. Restarted: 0

I (1916762) MASTER_TEST: Characteristic #0 Data_channel_0 (kW) value = 4531.000000 (0x458d9800) read successful. Restarted: 0

assert failed: xMBMasterRTUReceiveFSM mbrtu_m.c:235 (( eSndState == STATE_M_TX_IDLE ) || ( eSndState == STATE_M_TX_XFWR ))

Backtrace:0x40081c02:0x3ffd00700x40089559:0x3ffd0090 0x400909b5:0x3ffd00b0 0x400e0751:0x3ffd01d0 0x400e1545:0x3ffd0200 0x400e15b4:0x3ffd0230 0x4008cdad:0x3ffd0260

0x40081c02: panic_abort at C:/Users/Michael.Uray/esp/esp-idf/components/esp_system/panic.c:402

0x40089559: esp_system_abort at C:/Users/Michael.Uray/esp/esp-idf/components/esp_system/esp_system.c:128

0x400909b5: __assert_func at C:/Users/Michael.Uray/esp/esp-idf/components/newlib/assert.c:85

0x400e0751: xMBMasterRTUReceiveFSM at C:/Users/Michael.Uray/esp/esp-idf/components/freemodbus/modbus/rtu/mbrtu_m.c:235 (discriminator 2)

0x400e1545: usMBMasterPortSerialRxPoll at C:/Users/Michael.Uray/esp/esp-idf/components/freemodbus/port/portserial_m.c:94

0x400e15b4: vUartTask at C:/Users/Michael.Uray/esp/esp-idf/components/freemodbus/port/portserial_m.c:142

0x4008cdad: vPortTaskWrapper at C:/Users/Michael.Uray/esp/esp-idf/components/freertos/port/xtensa/port.c:131

ELF file SHA256: 375376b08aba9e70

Rebooting...

void app_main()

{

  const static char *TAG = "main";

  esp_err_t err = nvs_flash_init();

  if (err == ESP_ERR_NVS_NO_FREE_PAGES || err == ESP_ERR_NVS_NEW_VERSION_FOUND)

  {

    // NVS partition was truncated and needs to be erased

    // Retry nvs_flash_init

    ESP_ERROR_CHECK(nvs_flash_erase());

    err = nvs_flash_init();

  }

  ESP_ERROR_CHECK(err);

  wifi_app_main();

  led_setup();

  ws_server_start();

  xTaskCreate(&nvs_main, "nvs_main", 2000, NULL, 9, NULL);

  xTaskCreate(&server_task, "server_task", 2000, NULL, 9, NULL);

  xTaskCreate(&server_handle_task, "server_handle_task", 4000, NULL, 6, NULL);

  xTaskCreate(&count_task, "count_task", 2000, NULL, 2, NULL);

  xTaskCreate(&mb_master_main, "mb_master_main", 3500, NULL, 9, &mb_master_main_th);

  xTaskCreate(&mb_slave_main, "mb_slave_main", 3500, NULL, 9, NULL);

  xTaskCreate(&mqtt_ssl_main, "mqtt_ssl_main", 1024 * 8, NULL, 9, &mqtt_ssl_main_th);

}