Centos 7.5/PHP7.1 - Error: Cannot connect to back end

CentOS 7.5
PHP 7.1.18 (webtatic repo)
MariaDB Ver 15.1
Apache 2.4.6
Nextcloud 13.0.4

New/first install of Nextcloud. Already have a static virtual host site up and running with no problem. Can run the occ command (as user apache) without problem. Have updated the .htaccess file and restarted httpd.

Trying to access (using Firefox) gives the error

Service Unavailable

The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.

The nextcloud.error.log gives the key error as

AH01079: failed to make connection to backend:, referer: http://docs.newtechlaw.com/

The full error log is

[Fri Jun 15 19:59:42.926577 2018] [authz_core:debug] [pid 26926] mod_authz_core.c(809): [client] AH01626: authorization result of : granted, referer: http://docs.newtechlaw.com/
[Fri Jun 15 19:59:42.926632 2018] [proxy:debug] [pid 26926] mod_proxy.c(1123): [client] AH01143: Running scheme fcgi handler (attempt 0), referer: http://docs.newtechlaw.com/
[Fri Jun 15 19:59:42.926645 2018] [proxy_ajp:debug] [pid 26926] mod_proxy_ajp.c(722): [client] AH00894: declining URL fcgi://, referer: http://docs.newtechlaw.com/
[Fri Jun 15 19:59:42.926657 2018] [proxy_fcgi:debug] [pid 26926] mod_proxy_fcgi.c(972): [client] AH01076: url: fcgi:// proxyname: (null) proxyport: 0, referer: http://docs.newtechlaw.com/
[Fri Jun 15 19:59:42.926667 2018] [proxy_fcgi:debug] [pid 26926] mod_proxy_fcgi.c(979): [client] AH01078: serving URL fcgi://, referer: http://docs.newtechlaw.com/
[Fri Jun 15 19:59:42.926676 2018] [proxy:debug] [pid 26926] proxy_util.c(2203): AH00942: FCGI: has acquired connection for ()
[Fri Jun 15 19:59:42.926686 2018] [proxy:debug] [pid 26926] proxy_util.c(2256): [client] AH00944: connecting fcgi:// to, referer: http://docs.newtechlaw.com/
[Fri Jun 15 19:59:42.926837 2018] [proxy:debug] [pid 26926] proxy_util.c(2426): [client] AH00947: connected /var/www/html/nextcloud/index.php to, referer: http://docs.newtechlaw.com/
[Fri Jun 15 19:59:42.927197 2018] [proxy:error] [pid 26926] (111)Connection refused: AH00957: FCGI: attempt to connect to (
) failed
[Fri Jun 15 19:59:42.927224 2018] [proxy_fcgi:error] [pid 26926] [client] AH01079: failed to make connection to backend:, referer: http://docs.newtechlaw.com/
[Fri Jun 15 19:59:42.927230 2018] [proxy:debug] [pid 26926] proxy_util.c(2218): AH00943: FCGI: has released connection for (*)
[Fri Jun 15 19:59:42.927267 2018] [headers:debug] [pid 26926] mod_headers.c(848): AH01503: headers: ap_headers_error_filter()

The Virtual Hosts file is

<VirtualHost *:80>
ServerAdmin webmaster@newtechlaw.com
ServerName docs.newtechlaw.com
ServerAlias docs.certiv.net
DocumentRoot “/var/www/html/nextcloud”
Alias /nextcloud “/var/www/html/nextcloud/”

<Directory /var/www/html/nextcloud/>
   Options +FollowSymlinks
   AllowOverride All
   Require all granted
   <IfModule mod_dav.c>
       Dav off

   <IfModule mod_headers.c>
       Header always set Strict-Transport-Security "max-age=15552000"
    <FilesMatch \.php$>
       SetHandler "proxy:fcgi://"

   SetEnv HOME /var/www/html/nextcloud
   SetEnv HTTP_HOME /var/www/html/nextcloud
   SetEnvIf Authorization "(.*)" HTTP_AUTHORIZATION=$1


ErrorLog  logs/nextcloud.error.log
CustomLog logs/nextcloud.access.log combined



yum install php71w-fpm
systemctl start php-fpm
systemctl enable php-fpm