'[<NSObject 0x8a4b500> setValue:forUndefinedKey:]

Bug如下：
Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<NSObject 0x8a4b500> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key strss.'

解决方案

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原文地址：https://www.cnblogs.com/yate1996/p/4731159.html