add

app/Http/Controllers/VoteController.php

@@ -142,8 +142,8 @@ class VoteController extends Controller
             $votes->player_id = $player_id;
             $votes->group_id = $player->group_id;
             $votes->openid = $user->openid;
-            $votes->we_nickname = $user->nickname;
-            $votes->we_image = $user->headimgurl;
+            $votes->we_nickname = $user->nickname+"";
+            $votes->we_image = $user->headimgurl+"";
             $votes->ip = $vote_ip;
             $votes->save();
             return redirect()->route('vote.group', ['group_id' => $player->group_id])->with('status', '1');