I installed a Nexctloud app using the installer and after a fresh install Nextcloud is reporting several warnings. How can this be fixed?
1. The reverse proxy header configuration is incorrect. This is a security issue and can allow an attacker to spoof their IP address as visible to the Nextcloud. For more details see the documentation ↗.
2. The PHP memory limit is below the recommended value of 512 MB.
3. The PHP OPcache module is not properly configured. The OPcache buffer is nearly full. To assure that all scripts can be hold in cache, it is recommended to apply "opcache.memory_consumption" to your PHP configuration with a value higher than "128". The OPcache interned strings buffer is nearly full. To assure that repeating strings can be effectively cached, it is recommended to apply "opcache.interned_strings_buffer" to your PHP configuration with a value higher than "8".. For more details see the documentation ↗.
4. The "Strict-Transport-Security" HTTP header is not set to at least "15552000" seconds. For enhanced security, it is recommended to enable HSTS as described in the security tips ↗.
5. Your web server is not properly set up to resolve "/.well-known/caldav". Further information can be found in the documentation ↗.
6. Your web server is not properly set up to resolve "/.well-known/carddav". Further information can be found in the documentation ↗.
7. The database is used for transactional file locking. To enhance performance, please configure memcache, if available. For more details see the documentation ↗.
8. No memory cache has been configured. To enhance performance, please configure a memcache, if available. For more details see the documentation ↗.