update 201907211703:
SOLUTION
Add the perserve host diretive on in the virutalhost configuration file
root@vmhost: vi /etc/httpd/conf.d/vm1.conf
...
ProxyPreserveHost On
...
description of solution:
host used the wrong ip address to access images because of missing directive for reverse proxy
------------
problem:
images not showing when firenndly URL is turned ON (SEE IMAGE BELOW)

IMAGES CAN BE SEEN FROM BACKOFFICE

SETUP:
This prestashop instance is on an internal network not accessible publicly inside a VM
installed php modules:
rh-php72 rh-php72-php rh-php72-php-xml rh-php72-php-gd rh-php72-php-intl rh-php72-php-zip rh-php72-php-common rh-pgp72-php-mbstring
mod_rewrite is turned on in apache
selinux is in permissive mode currently for debugging
apache is the owner of /var/www/html
FOR TESTING PURPIOSES ALL FILES IN /VAR/WWW/HTML IS CHMOD 777 (NOT RECOMMENDED FOR PRODUCTION)
.htaaccess file is automatically generated when activating/deactivating friendly urls

info_outline Configuration information
This information must be provided when you report an issue on our bug tracker or forum.
info_outline Server information
Server information Linux #1 SMP Tue Jun 18 16:35:19 UTC 2019 x86_64
Server software version: Apache/2.4.6 (CentOS) PHP/7.2.10
PHP version: 7.2.10
Memory limit: 128M
Max execution time: 30
Upload Max File size: 2M
info_outline Database information
MySQL version: 5.5.60-MariaDB
MySQL server: 127.0.0.1
MySQL name: prestadb
MySQL user: prestauser
Tables prefix: presta_
MySQL engine: InnoDB
MySQL driver: DbPDO
info_outline Store information
PrestaShop version: 1.7.6.0
Shop URL: http://vm1.com/
Shop path: /var/www/html
Current theme in use: classic
info_outline Mail configuration
Mail method: You are using the PHP mail() function.
info_outline Your information
Your web browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36
info_outline Check your configuration
Required parameters: OK
Optional parameters: OK
I HAVE
Deleted .htaccess file and turned friendly urls on (rm -rf /var/www/html/.htaaccess, BACKOFFICE > SHOP PARAMETERS > URL & SEO > FRIENDLY URLS > CHECKED ). The .htaccess file is regernerated with the following contents:
# ~~start~~ Do not remove this comment, Prestashop will keep automatically the code outside this comment when .htaccess will be generated again # .htaccess automaticaly generated by PrestaShop e-commerce open-source solution # http://www.prestashop.com - http://www.prestashop.com/forums <IfModule mod_rewrite.c> <IfModule mod_env.c> SetEnv HTTP_MOD_REWRITE On </IfModule> RewriteEngine on #Domain: vm1.com RewriteRule . - [E=REWRITEBASE:/] RewriteRule ^api(?:/(.*))?$ %{ENV:REWRITEBASE}webservice/dispatcher.php?url=$1 [QSA,L] # Images RewriteCond %{HTTP_HOST} ^vm1.com$ RewriteRule ^([0-9])(\-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+\.jpg$ %{ENV:REWRITEBASE}img/p/$1/$1$2$3.jpg [L] RewriteCond %{HTTP_HOST} ^vm1.com$ RewriteRule ^([0-9])([0-9])(\-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+\.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$1$2$3$4.jpg [L] RewriteCond %{HTTP_HOST} ^vm1.com$ RewriteRule ^([0-9])([0-9])([0-9])(\-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+\.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$1$2$3$4$5.jpg [L] RewriteCond %{HTTP_HOST} ^vm1.com$ RewriteRule ^([0-9])([0-9])([0-9])([0-9])(\-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+\.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$4/$1$2$3$4$5$6.jpg [L] RewriteCond %{HTTP_HOST} ^vm1.com$ RewriteRule ^([0-9])([0-9])([0-9])([0-9])([0-9])(\-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+\.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$4/$5/$1$2$3$4$5$6$7.jpg [L] RewriteCond %{HTTP_HOST} ^vm1.com$ RewriteRule ^([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(\-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+\.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$4/$5/$6/$1$2$3$4$5$6$7$8.jpg [L] RewriteCond %{HTTP_HOST} ^vm1.com$ RewriteRule ^([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(\-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+\.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$4/$5/$6/$7/$1$2$3$4$5$6$7$8$9.jpg [L] RewriteCond %{HTTP_HOST} ^vm1.com$ RewriteRule ^([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])([0-9])(\-[_a-zA-Z0-9-]*)?(-[0-9]+)?/.+\.jpg$ %{ENV:REWRITEBASE}img/p/$1/$2/$3/$4/$5/$6/$7/$8/$1$2$3$4$5$6$7$8$9$10.jpg [L] RewriteCond %{HTTP_HOST} ^vm1.com$ RewriteRule ^c/([0-9]+)(\-[\.*_a-zA-Z0-9-]*)(-[0-9]+)?/.+\.jpg$ %{ENV:REWRITEBASE}img/c/$1$2$3.jpg [L] RewriteCond %{HTTP_HOST} ^vm1.com$ RewriteRule ^c/([a-zA-Z_-]+)(-[0-9]+)?/.+\.jpg$ %{ENV:REWRITEBASE}img/c/$1$2.jpg [L] # AlphaImageLoader for IE and fancybox RewriteRule ^images_ie/?([^/]+)\.(jpe?g|png|gif)$ js/jquery/plugins/fancybox/images/$1.$2 [L] # Dispatcher RewriteCond %{REQUEST_FILENAME} -s [OR] RewriteCond %{REQUEST_FILENAME} -l [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^.*$ - [NC,L] RewriteRule ^.*$ %{ENV:REWRITEBASE}index.php [NC,L] </IfModule> AddType application/vnd.ms-fontobject .eot AddType font/ttf .ttf AddType font/otf .otf AddType application/font-woff .woff AddType font/woff2 .woff2 <IfModule mod_headers.c> <FilesMatch "\.(ttf|ttc|otf|eot|woff|woff2|svg)$"> Header set Access-Control-Allow-Origin "*" </FilesMatch> </IfModule> #If rewrite mod isn't enabled ErrorDocument 404 /index.php?controller=404 # ~~end~~ Do not remove this comment, Prestashop will keep automatically the code outside this comment when .htaccess will be generated again
SHOP PARAMETERS > SEARCH > Add missing products to the index & Re-build the entire index
DESIGN > IMAGE SETTINGS > REGENERATE THUMBNAILS
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how can fix this?
more images:
debug image

PHP FILE
FRIENDLY URLS OFF
FRIENDLY URLS ON
.png.022b5452a8f28f552bc9430097a16da2.png)
