Cannot use database

The URL Is:
http://ww300.com/bbs/search.php?authorid=%E2%94%8F073%E6%9C%9F%E2%94%93%E3%80%8A%E3%80%8A%E3%80%8A%E3%80%8A%E3%80%8A%E3%80%8A%E3%80%8A%E3%80%8A%E7%B2%BE%E5%87%86%E3%80%8824%E7%A0%81%E3%80%89%E3%80%8B%E3%80%8B%E3%80%8B%E3%80%8B%E3%80%8B%E3%80%8B%E3%80%8B%E3%80%8B%E3%80%8B%E3%80%8B

MySQL Server Error:
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