Undefined variable: utmctr Error

Hi there, we’ve just installed your plugin and this is the error we received:

Notice: Undefined variable: utmctr in /home3/mediano2/public_html/v2014/wp-content/plugins/contact-form-7-analytics-by-found/found.php on line 90

Can you please take a look at this?

Thanks,

https://ww.wp.xz.cn/plugins/contact-form-7-analytics-by-found/