I have an issue about some php modules (zip, xmlwriter, xmlreader, libxml, multibyte, simplexml) that are not recognized when connecting to nextcloud after first install. Here is the type of message i have connecting to nextcloud :
"PHP module zip not installed. Please ask your server administrator to install the module."
I firstly followed this tuto, but it appears that the current version of nextcloud needs php 5.6. I also followed this tuto to install php 7. It worked, but at the end, when launching nextcloud i have the previously mentioned messages. I have restarted my pi3, but nothing changed.