Ask about the comunication between the arduino and Raspberry Pi

[zxkic]

Hello,I'm trying to reproduce part of this work for my own project. However, I connect the nano and Raspberry Pi by mcp2515,but Raspberry Pi cannot grab the CAN frame transmitted from nano。
this is my connection:
nano MCP2515
D10 CS
D12 SO
D11 SI
D13 SCK
D2 INT
RPi Pin RPi Label CAN Module
02---------5V------------VCC
06---------GND-----------GND
19---------GPIO10--------MOSI (SI)
21---------GPIO9---------MISO (SO)
22---------GPIO25--------INT
23---------GPIO11--------SCK
24---------GPIO8---------CS
Than， two mcp2515 connect by can_h,can_l
In nano ，I can see the led light.
In RPi, I can use candump to grab other CAN frame.
However, I can't see can frame from nano.
Can you give me some information?Thank you very much!