Installing Drupal

I'm trying to set up a copy of our production site for testing / development of a redesign. We are hosted on GoDaddy. I have followed the steps listed here: https://www.drupal.org/node/2365719

Multiple times and I keep getting to the same error:
PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'i602245_drup2.drup_semaphore' doesn't exist: SELECT expire, value FROM {semaphore} WHERE name = :name; Array ( [:name] => variable_init ) in lock_may_be_available()

After getting the same set of errors from multiple attempts. I even R.t.F.M. after several failed attempts.
Tried everything I could think of to trouble shoot the problem, short of diving into the code. My reasoning for not doing that was, "Approach this as someone with limited experience and/or resources."

An AJAX HTTP error occurred. HTTP Result Code: 500 Debugging information follows.

Hello,

I tried to install Commons Distribution ver 7.x-3.32 and encountered an error which I don't have any clue what it is about. Can anyone explain what has gone wrong or is it a bug in the code?

The error message is shown below:

Hostmonster shared hosting. I have successfully installed Drupal 7 sites under this account before. I am excited to begin with Drupal 8 but cannot continue.

PHP Version 5.6.15
MySQL Version 5.5.42-37.1-log

This is an issue related to the following during installation:

Database support Disabled
Your web server does not appear to support any common PDO database extensions. Check with your hosting provider to see if they support PDO (PHP Data Objects) and offer any databases that Drupal supports.

I have installed several times successfully in two subdirectories, but whenever I attempt to go to another page i get the https://www.modelsushi.com/core/install.php (drupal is already installed page)

I have followed this tutorial drupal 8 multisite
changed permissions Step 3