title: Non-static method tNG_log::log() should not be called statically, assuming $this from incompatible context
body: <p>I am getting the above error - here is the code that it is referring to:</p>
  
  <pre><code>function executeTransaction() {
          tNG_log::log('tNG' . $this-&gt;transactionType, 'executeTransaction', 'begin');
          if ($this-&gt;started) {
              tNG_log::log('tNG' . $this-&gt;transactionType, 'executeTransaction', 'end');
              return false;
          }
  </code></pre>
  
  <p>I am unsure how to edit the above code effectively to make the error message go away. I am aware that I can edit the php.ini file so that these errors do not show, however I would rather fix the code</p>