fix console error

src/modules/users.js

@@ -94,11 +94,12 @@ export const mutations = {
   updateUserRelationship (state, relationships) {
     relationships.forEach((relationship) => {
       const user = state.usersObject[relationship.id]
-
+      if (user) {
         user.follows_you = relationship.followed_by
         user.following = relationship.following
         user.muted = relationship.muting
         user.statusnet_blocking = relationship.blocking
+      }
     })
   },
   saveBlocks (state, blockIds) {