应该是签证处弄错了什么,盖的章,不影响你的签证。放心吧,没问题。
Cancelled Without Prejudice: A stamp an embassy or consulate puts on a visa when there is a mistake in the visa or the visa is a duplicate visa (two of the same kind). It does not affect the validity of other visas in the passport. It does not mean that the passport holder will not get another visa.
你可以去网上搜搜,类似你的问题很多。
通过了,前一个要么就是印错了,要么就是以前正常使用的过期了,也会盖这个章,防止机场移民官员看花眼。没问题。