请问这个有解吗？

VM180 WAService.js:2 Error: errCode: -404011 cloud function execution error | errMsg: cloud.callFunction:fail requestID 64945d0b-471d-42a6-ac99-0ca7a3ddba0b, cloud function service error code -504002, error message TypeError: Do not know how to serialize a BigInt     at JSON.stringify (<anonymous>)     at callback (:24682/var/runtime/node12/CallbackContext.js:31)     at :24682/var/runtime/node12/CallbackContext.js:81     at :24682/var/runtime/node12/Runtime.engine.js:237     at processTicksAndRejections (:24682/appservice/internal/process/task_queues.js:97); at cloud.callFunction api;      at new e (VM180 WAService.js:26)     at s (VM180 WAService.js:26)     at c (VM180 WAService.js:26)     at Function.success (VM180 WAService.js:26)     at I (VM180 WAService.js:2)     at VM180 WAService.js:2     at u (VM180 WAService.js:35)     at Function.<anonymous> (VM180 WAService.js:35)     at I (VM180 WAService.js:2)     at VM180 WAService.js:2(env: macOS,mp,1.05.2201240; lib: 2.14.1) errorReport @ VM180 WAService.js:2 thirdErrorReport @ VM180 WAService.js:2 (anonymous) @ VM180 WAService.js:2 u @ VM180 WAService.js:2 g @ VM180 WAService.js:2 (anonymous) @ VM180 WAService.js:2 value @ VM180 WAService.js:2 e @ VM180 WAService.js:2 (anonymous) @ VM180 WAService.js:2

const fileID = event.fileID const res = await cloud.downloadFile({ fileID: fileID, }) const buffer = res.fileContent

appID: wx2328755b6cea1868 请速查询啊。