A number of warnings may appear, these are not related to the smarty version but to the php version. This page is therefore not really related to the transition to smarty 3 but it is interesting to take advantage of this tutorial to explain how to remove these warnings.

For this kind of warning:

It is a bit more complex to find the error line because the warning indicates a cache file, so we will not have the exact error line which is, in this case, in the xmnews_admin_category.tpl

Corrections

If we go back to the warnings presented above, we only need to deal with the first one, "Undefined array key" :

The "statut" variable does not seem to be defined !
Just open the template xmnews_admin_category.tpl and search for the "statut" variable with the search tool.
The problematic code is:

To correct it, you have to define if it is a character string that is expected or a logical value.

• If it's a character string, the code is modified like that:
  <th class="txtcenter width5"><{$statut|default:''}>th>
  
  
• If it's a logical value, the code is modified like that:
  <th class="txtcenter width5"><{$statut|default: false}>th>