Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed.

Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (JSON text did not start with array or object and option to allow fragments not set.) UserInfo=0x174675cc0 {NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set., NSUnderlyingError=0x170243c90 "Request failed: not found (404)"}

网址错误,改下网址即可

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