Fatal Error Detected.

<br />
<b>Fatal error</b>:  Uncaught Error: Undefined constant &quot;BitFireBot\IP_GOOG_MS_AUTO&quot; in /home/kralskav/public_html/wp-content/plugins/bitfire/src/botfilter.php:1391
Stack trace:
#0 /home/kralskav/public_html/wp-content/plugins/bitfire/src/botfilter.php(830): BitFireBot\bot_authenticate(Object(BitFire\UserAgent), Object(BitFire\Request), Object(BitFire\IPData))
#1 /home/kralskav/public_html/wp-content/plugins/bitfire/src/bitfire.php(844): BitFire\BotFilter-&gt;inspect(Object(BitFire\Request), Object(BitFire\UserAgent))
#2 /home/kralskav/public_html/wp-content/plugins/bitfire/startup.php(94): BitFire\BitFire-&gt;inspect()
#3 /home/kralskav/public_html/wp-content/plugins/bitfire/bitfire-plugin.php(100): include_once('/home/kralskav/...')
#4 /home/kralskav/public_html/wp-settings.php(517): include_once('/home/kralskav/...')
#5 /home/kralskav/public_html/wp-config.php(92): require_once('/home/kralskav/...')
#6 /home/kralskav/public_html/wp-load.php(50): require_once('/home/kralskav/...')
#7 /home/kralskav/public_html/wp-blog-header.php(13): require_once('/home/kralskav/...')
#8 /home/kralskav/public_html/index.php(17): require('/home/kralskav/...')
#9 {main}
  thrown in <b>/home/kralskav/public_html/wp-content/plugins/bitfire/src/botfilter.php</b> on line <b>1391</b><br />
<h1>Fatal Error Detected.</h1><p>please contact support - info@bitslip6.com</p><p>Reference: 66e8a40a3b8e3</p>