问题
everytime I install a new plugin for wordpress it says Could not copy file and the files address. Does anybody know why this is the case.
回答1:
Check file premissions and (important!) file owner or group. If you use apache server group must be www-data (default). This can be a solution
回答2:
I was facing the same issue but in my case I was updating using FTP.
I fixed it by setting the hostname to "localhost" instead of using the IP.
This is because there was a loop happening and making the file upload fail and that's logged in the /var/log/vsftpd.log
来源：https://stackoverflow.com/questions/48666897/any-plugin-installation-failed-could-not-copy-file-error