云函数中调用cloud.openapi.storage.setUserStorage 代码如下： cloud.openapi.storage.setUserStorage({         openid: update_users.data[i]._id,         kvList: [{           key: 'coins',           value: update_users.data[i].coins,         }, {           key: 'solved',           value: update_users.data[i].solved.length,         }]       }) 报错如下： START RequestId:b8d73340-9806-11eb-b6bd-525400be5245 2021-04-08T01:07:00.552Z (node:7) UnhandledPromiseRejectionWarning: Error: errCode: -604104 illegal source of invocation | errMsg: system error: error code: -604104 at callGeneralOpenAPI (/var/user/node_modules/wx-server-sdk/index.js:486:27) at process._tickCallback (internal/process/next_tick.js:68:7) 2021-04-08T01:07:00.552Z (node:7) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1) 2021-04-08T01:07:00.553Z (node:7) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code. 2021-04-08T01:07:00.553Z (node:7) UnhandledPromiseRejectionWarning: Error: errCode: -604104 illegal source of invocation | errMsg: system error: error code: -604104 at callGeneralOpenAPI (/var/user/node_modules/wx-server-sdk/index.js:486:27) at process._tickCallback (internal/process/next_tick.js:68:7) 2021-04-08T01:07:00.553Z (node:7) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2) END RequestId:b8d73340-9806-11eb-b6bd-525400be5245 Report RequestId:b8d73340-9806-11eb-b6bd-525400be5245 Duration:203ms Memory:256MB MemUsage:30.187500MB config.json中已配置： "permissions": {     "openapi": [       "storage.setUserStorage"     ]   }, package.json中已配置： "dependencies": {     "wx-server-sdk": "~2.4.0"   } 开发者工具版本：Stable 1.05.2102010

// 云函数入口文件 const cloud = require('wx-server-sdk') cloud.init() // 云函数入口函数 exports.main = async (event, context) => {   var cloud_back = new cloud.Cloud({     resourceAppid: 'xxx',     resourceEnv: 'yyy',   })   await cloud_back.init({     env: cloud_back.DYNAMIC_CURRENT_ENV   })   const db = cloud_back.database({     throwOnNotFound: false   })   const _ = db.command   try {     const result = await db.runTransaction(async transaction => {       const r1 = await transaction.collection('book').doc(event.books[0]._id).get()       const r2 = await transaction.collection('book').doc(event.books[1]._id).get()       if (r1.data && r2.data) {         const u1 = await transaction.collection('book').doc(event.books[0]._id).update({           data: {             available_stock: _.inc(1)           }         })         const u2 = await transaction.collection('book').doc(event.books[1]._id).update({           data: {             available_stock: _.inc(1)           }         })         console.log(`transaction succeeded`)         // 会作为 runTransaction resolve 的结果返回         return {           r1: r1.data.available_stock + 1,           r2: r2.data.available_stock + 1,         }       } else {         // 会作为 runTransaction reject 的结果出去         await transaction.rollback(-100)       }     })     return {       success: true,       Account: result,     }   } catch (e) {     console.error(`transaction error`, e)     return {       success: false,       error: e     }   } } B的环境共享给了A（所有权限） 在A的云函数中，访问B的数据库，使用runTransaction创建事务，抛出异常： { code: 'SIGN_PARAM_INVALID', message: 'you are not authorized to perform operation (tcb:database.startTransaction)' }  如果在A的云函数中，改成访问A的数据库，就没有问题。