Setup PPTP Server

First we need to install pptp server using apt-get

# sudo apt-get install pptpd

Then we need to configure the pptpd.

# sudo nano /etc/pptpd.conf

1. Install java

Install Java 8 on Ubuntu
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update
sudo apt-get install oracle-java8-installer

Verify Java Inatallation
sudo apt-get install oracle-java8-set-default
java -version

When you remove a module manually or re import a database, some times you have a message like "The following module is missing from the file system...". this is due to deleted modules.

In this example, we will use a field to get tags list, the number of tags dynamic.

Simple taxonomy autocomplete field.

Example:
$form['tagtest'] = [
  '#type' => 'entity_autocomplete',
  '#target_type' => 'taxonomy_term',
  '#title' => 'Taxonomy Term',
];