updating concrete5

Permalink
Hi
When I try updating 5.7.5.13 to 8.2.1 I get
An unexpected error occurred.
Call to a member function getStyleValueList() on null

How can I cure this please ?

tjbphoto
 
tjbphoto replied on at Permalink Best Answer Reply
tjbphoto
OK No problem.
Looked through archives and found it to be out of date theme. Updated theme and everything jolly.