Please use the following command to upload the kernel logs generated on your desktop:
sudo journalctl -k > ~/Desktop/kernel_journal.txt

If you do not have internet access, please use a USB drive or other means to transfer the file to a device that can go online, and then upload it there. I will forward it to the R&D team for analysis to identify where the issue lies.

Additionally, R&D suggests powering off the device for two minutes and then restarting it to see if the issue recovers.

I have internet access, i can choose wifi network with the dock plugin. But not in the control center

The kernel logs

kernel_journal.txt

At first I thought it was a network card driver loss caused by a kernel issue, but from the looks of it now, it doesn't seem to be a driver problem. You can run apt policy dcc-network-plugin in the terminal to check whether the dcc-network-plugin package is present. If it isn't, try installing it with apt install dcc-network-plugin and see if the network module recovers. If it still doesn't recover, you can export the Control Center logs and I'll pass them to the R&D team for further analysis of the issue.

journalctl --user -t dde-control-center > ~/Desktop/dde-control-center.txt

after this apt install dcc-network-plugin, all is ok now .

Thank you

Hello

I would recommend you to do a fresh installation, it works fine.