一直用的宝塔面板，自从 5.9.1 后就没有升级过。后台也没提示，就一直没更新，今天闲来无事更新一下，发现：可以更新到6.6版本了。但是提示不能平滑的升级。
The pagoda panel that has been used has not been upgraded since 5.9.1. There is no prompt in the background, it has not been updated, and I have nothing to update today, I found that I can update to version 6.6. But the prompt does not smooth the upgrade.
Here is a brief summary of the main points of upgrading to 6.6:
Backup! Backup! ! Be sure to back up before updating
Install cloud lock to close
The plugin will not work and needs to be uninstalled and reloaded.
Basically, here are a few points, then run the following command to upgrade:
The consequences of the upgrade are not obvious. Some plug-ins can’t be used. After uninstalling and reinstalling, it is perfectly solved!