C:\wamp\www\estate\modules\mod_realestatemanager_new_j3\tmpl\default.php


<a class="readon" href="<?php //echo sefRelToAbs( $link1 ); ?>" target="_self"><input class="submit" type="submit" value="Read more" /></a>


<a class="readon" href="<?php echo sefRelToAbs( $link1 ); ?>" target="_self"><input class="submit" type="submit" value="Read more" /></a>

Hello
you must do the following.
Go to (I install in wamp in estate directory. this changes according to your installation. )
C:wampwwwestatemodulesmod_realestatemanager_new_j3tmpldefault.php

and remove the two / / in  ( Use the editor  notepad **)approximately in line 347 
php //echo sefRelToAbs( $link1 ); 

thus being

php echo sefRelToAbs( $link1 );