Please try disabling third-party plugins and customizations, there were no other reports for this issue (and 1.6.14 was released more than a month ago) and it seems to be ok on the demo site, this may be something related to the site settings, plugins or customizations.
i found list of issues from ‘Site Health Status’ . . . can it be the case before informing server administrator, please
Site Health Status
One or more recommended modules/php-extensions are missing
Warning The optional module, imagick, is not installed, or has been disabled.
Warning The optional module, intl, is not installed, or has been disabled.
Outdated SQL server
running MySQL version less than 5.7
Unable to detect the presence of page cache
Unable to detect page cache due to possible loopback request problem. Please verify that the loopback request test is passing. Error: cURL error 28: Operation timed out after 5005 milliseconds with 0 bytes received (Code: http_request_failed)
I can’t say for sure about the caching error, maybe you’re using some caching plugin that adds this notice? Other errors should be resolved by your hosting provider, these are basic PHP modules, and the SQL server should be up-to-date.