[visualization-api] Data column(s) for axis #0 cannot be of type string

[TheMeggatrron]

Hello,

I have developed a dashboard on my local computer using Xampp, PHP and 
MySql. Everything works great. But, when I upload it to my server I get the 
following error:
"Data column(s) for axis #0 cannot be of type string"
Here is the php code in the php file to call data from the MySql database.:

         var data = google.visualization.arrayToDataTable([
        ['Risk', 'Count',],
          <?php
          WHILE ($row = mysqli_fetch_array($AuditRiskRatingBarResult))
          {
            echo "['".$row["risk"]."', ".$row["tally"]."],"; 
          }
          ?>
      ]);

Again, it works as expected on two computers I have set up using Xampp. 
Pleas help.

Thank you.

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