Error reg page

[avdesigns]

Hi I have this error on my register page

Registration

Welcome to the registration form for Fast Jet Group. After you register, you will be notified by a staff member about your membership.

First Name: *

Last Name: *

Email Address: *

Select Airline: *

in /customers/6/7/1/fastjetvirtual.co.uk/httpd.www/core/classes/TemplateSet.class.php on line 96

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Under this it shows the page normally

Can you help

Thanks