fix error

MusicVideoPlus/Classes/Modules/Mine/Controllers/MVMineProductController.swift

@@ -98,7 +98,9 @@ class MVMineProductController: PQBaseViewController {
                     } else {
                         self?.itemsList = self!.itemsList + videoList!
                     }
-                    self?.flowLayout.findList = self?.itemsList as! [Any]
+                    if self?.itemsList != nil {
+                        self?.flowLayout.findList = self?.itemsList as! [Any]
+                    }
                     self?.collectionView.reloadData()
                     self?.emptyView.isHidden = true
                 } else {