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Cannot Access Steam Inventory
I tried to access my Steam inventory but I get an -310 error (unknown error) in response to a new item notification. I visited my Steam page on the Internet without logging in and I noticed that the additional item to my inventory is a booster pack for Team Fortress 2. I completed all 5 levels of of trading cards for Team Fortress 2, so there should not be a booster pack for Team Fortress 2. I think the addition of the booster pack is causing this error. Is there any way to fix this error.