The colab has a connection error

[hothot9532]

Based on the example below in the pubilc URL, I successfully ran the result once, but when I tried to run a new example, I kept getting the following error:

And here on the colab side of the code, the display is running:

However, all three screens that should have produced results reported "ERROR", and when I tried to run again, the code simply stopped running:

What I can determine is whether the colab linked device is the problem, because I have been observing the RAM condition of the linked device while running, and it is normally linked.
I also tried "disconnect and delete runtime", tried to run the entire colab code again, and found that the same error occurred, that is, a device would only run successfully the first time (I used colab to run once on another device, and the second time also reported an error), However, such a link error will occur the second time and thereafter.