'fix'

app/Modules/Channel/Services/ChannelRecommendBooksService.php

@@ -35,7 +35,7 @@ class ChannelRecommendBooksService
                     $value += 1;
                 }
                 if(isset($bids[$key[0]+3])){
-                    $bidArr[] = $bids[$key[0]+2];
+                    $bidArr[] = $bids[$key[0]+3];
                 }else{
                     $bidArr[] = $bids[$value-1];
                 }