Solution to the problem of unable to download/update theme plug-in when building WordPress on VPS

Yesterday, a netizen built his own WordPress website on a VPS, but when downloading and updating the plug-in in the background, there was a prompt "An unknown error occurred." It may be because WordPress.org is not working properly, or the local configuration is incorrect. If The problem persists, please browse the Chinese support forum.\\" Such a problem. This is the first time I have seen this problem. The prompt I have seen before is that the permissions are insufficient. We only need to grant permissions to the directory to complete. So how to solve this problem?

When encountering this problem, we will definitely go online to find out if there are any similar problems. The online tutorial is to open the vi /etc/resolv.conf file of our VPS, and then check to see if our local DNS is normal. It is recommended that you change it to nameserver 8.8.8.8 and nameserver 8.8.4.4

Then you definitely need to restart the VPS server. If there is still no way to solve it (this friend still has no way to solve it), my suggestion is to change the space. He has no problem when he changes to another VPS, and there is no need to just change it. DNS. Snail doesn't know where the problem is. It's the same program and the same one-click installation package. Different VPS providers and different IPs, I guess it can only be the latter problem. Is it a configuration problem or a service provider IP problem?

Has anyone encountered this situation?

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