avquery findObjectsInBackgroundWithBlock总是出错,而getFirstObjectInBackgroundWithBlock就没有问题

Question

Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn\u2019t be completed. (Cocoa error 3840.)" (Number wound up as NaN around character 2559.) UserInfo=0x14f44a90 {NSDebugDescription=Number wound up as NaN around character 2559.}

Answer 1

请提出技术支持。可能是超时引起的。