apache virtualhost

on centos8 and apache2.4 I installed postgres13 and pgadmin4 and a php application

I configured single virtualhost as follow:

<VirtualHost *:80>
     DocumentRoot /var/www/myapp1/public

     <Directory /var/www/myapp1>
          AllowOverride All
     </Directory>
 
     LoadModule wsgi_module modules/mod_wsgi.so
     WSGIDaemonProcess pgadmin processes=1 threads=25
     WSGIScriptAlias /pgadmin4 /usr/lib/python3.6/site-packages/pgadmin4-web/pgAdmin4.wsgi

     <Location /pgadmin4>
          WSGIProcessGroup pgadmin
          WSGIApplicationGroup %{GLOBAL}
          Require all granted
     </Location>
</VirtualHost>

myapp1 works well on http://MY_PUBLIC_IP/

but when I try to get pgadmin web interface at http://MY_PUBLIC_IP/pgadmin4 I got internal server error.

how to configure apache virtual host to get:

pgadmin4 at http://MY_PUBLIC_IP/pgadmin4 and myapp1 on http://MY_PUBLIC_IP

or pgadmin4 at http://MY_PUBLIC_IP:50050/ and myapp1 at  http://MY_PUBLIC_IP/