Fatal error: Call to a member function getId() on a non-object /public_html/app/code/core/Mage/Dataflow/Model/Profile/History.php on line 48
what’s happening on this line ? all my size is Fatal error: Call to a member function getId() on a non-object . how to fix it .
we installed themes correctly before. it was clean installed . homepage issues had been fixed . but suddenly appeared Invalid backend model specified:fixedprices/product_attribute_backend_fixedprices
this issue. can we fix this issue perfectly ?
thanks for your help