thank for your kindness. I did it & solve the problem

@Phaedrux
THK For your kindness
M122
=== Diagnostics ===
Used output buffers: 4 of 32 (9 max)
=== Platform ===
RepRapFirmware for Duet 2 WiFi/Ethernet version 1.21 running on Duet WiFi 1.02 or later
Board ID: 08DLM-996AL-K65SW-6J9F2-3S06N-1V7LZ
Static ram used: 16152
Dynamic ram used: 100504
Recycled dynamic ram: 2128
Stack ram used: 1224 current, 4448 maximum
Never used ram: 7840
Last reset 00:00:27 ago, cause: power up
Last software reset at 2020-07-31 14:19, reason: User, spinning module GCodes, available RAM 7760 bytes (slot 1)
Software reset code 0x0003 HFSR 0x00000000, CFSR 0x00000000, ICSR 0x0441f000, BFAR 0xe000ed38, SP 0xffffffff
Error status: 0
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms
MCU temperature: min 33.1, current 37.0, max 37.2
Supply voltage: min 23.9, current 24.0, max 24.2, under voltage events: 0, over voltage events: 0
Driver 0: standstill, SG min/max not available
Driver 1: standstill, SG min/max not available
Driver 2: standstill, SG min/max not available
Driver 3: standstill, SG min/max not available
Driver 4: standstill, SG min/max not available
Date/time: 2020-08-01 08:53:09
Slowest main loop (seconds): 0.015654; fastest: 0.000046
=== Move ===
MaxReps: 0, StepErrors: 0, LaErrors: 0, FreeDm: 240, MinFreeDm 240, MaxWait: 0ms, Underruns: 0, 0
Scheduled moves: 0, completed moves: 0
Bed compensation in use: none
Bed probe heights: 0.000 0.000 0.000 0.000 0.000
=== Heat ===
Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
=== GCodes ===
Segments left: 0
Stack records: 1 allocated, 0 in use
Movement lock held by null
http is idle in state(s) 0
telnet is idle in state(s) 0
file is idle in state(s) 0
serial is idle in state(s) 0
aux is idle in state(s) 0
daemon is idle in state(s) 0
queue is idle in state(s) 0
autopause is idle in state(s) 0
Code queue is empty.
=== Network ===
Responder states: HTTP(1) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
HTTP sessions: 1 of 8

• WiFi -
  Network state is running
  WiFi module is connected to access point
  Failed messages: pending 0, notready 0, noresp 0
  WiFi firmware version 1.23
  WiFi MAC address 8c:aa:b5:d4:63:4c
  WiFi Vcc 3.39, reset reason Turned on by main processor
  WiFi flash size 4194304, free heap 24584
  WiFi IP address 192.168.0.12
  WiFi signal strength -49dBm, reconnections 0, sleep mode modem
  Socket states: 2 0 0 0 0 0 0 0
  === Expansion ===

I am a duet wifi user.
I set up a duet board yesterday and am using it well.
I think it is a good and good board.
I have a question.
When uploading a file to the duet board, the same file appears to be infinite.
Actually, when I look at the micro SD card on my computer, there is only one file, but it looks infinite on the duet board web screen.
Is there any way to solve it?