HCA Framework : Error !

HCA Framework Error

Error in the file /Donner/JPaulH/Autresite/Ferme_Coccinelle/tpl/compiles/same(x2F)materiel2.tpl.php at the line 45.

      <?php if ( $this->Vars['key'] > 36 && $this->Vars['p'] != 1):

PHP Error #8 @ line 45: Undefined index: p