HELP S champion shard for lvling up not showing

In the past week I have got 2 S's but the shards don't show up. All it says when I open loot is: ERROR :( Unable to retrieve some loot item data. Items may appear without icons or names. If so try restarting your client. I've restarted my client 3 times and it didn't work. PLEASE tell me if your know how to fix this because I want to lvl kan to lvl 7. Now later I played a game and got another s and this time it gave me a shard but the other 2 times it didn't? do u know why? thx
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