Thank you so much for contacting our support center.
This error usually appears when you have some problems on your server side or plugin is already installed. We suggest you to remove and reinstall the plugins from scratch. If it will not help, you need to contact your host for help.
Hey thanks for the response.
This is the first time I have tried to install the plugins and only 3 have been successfully installed, the rest of the plugins will receive an error message.
I contacted the host and he says this is the first time he has encountered it.
What could be the problem he needed to fix from his side?
Thank you.
I was just trying to reinstall, and I was able to install the most necessary plug-ins.
I have a problem right now with only 2:
Redux Framework
MailChimp for WordPress