Under Ubuntu16.04, there will always be various problems and errors. Please record them here. If you encounter them later, there is a reference
Continually updated……
- snap
when I is ubuntu Software Center to download the software from time to time in the snap store, encountered the following error:
snapd returned status code 409: Conflict
After searching online, I learned that this error code 409 means that the request could not be completed due to a conflict with the current state of the requested resource. That is, the error code returned during concurrent execution.
Because the Ubuntu Software Center did not respond before and I forced to quit, it is indeed very likely to conflict with the halfway installation. So use snap changes to view recent snap changes.
Sure enough, I saw that the previous snap process was still "Doing", so I used sudo snap abort to terminate the process according to the corresponding sequence number.
Then go back to the software center to install, there will be no previous errors.
Reference: https://gsy00517.github.io/ubuntu20200127123832/