云函数本地调试可以用，但是上传了就报错

云函数报错

日志内容 Request ID: 2630a398-8b5e-487b-8d82-e42d95cd33a4

执行时间: 0ms内存使用: Zero KB

返回结果

(空)

日志

TypeError: Cannot read properties of undefined (reading 'toString')

at writeRuntimeFile (/data/scf/frame/node16/runtime.js:65:37)

at main (/data/scf/frame/node16/runtime.js:259:7)

at Object.<anonymous> (/data/scf/frame/node16/runtime.js:268:1)

at Module._compile (node:internal/modules/cjs/loader:1101:14)

at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)

at Module.load (node:internal/modules/cjs/loader:981:32)

at Function.Module._load (node:internal/modules/cjs/loader:822:12)

at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)

at node:internal/main/run_main_module:17:47

START RequestId: 2630a398-8b5e-487b-8d82-e42d95cd33a4

Init Report RequestId: 2630a398-8b5e-487b-8d82-e42d95cd33a4 Coldstart: 7ms (InitRuntime: 7ms InitFunction: 0ms) Memory: 256MB MemUsage: 0.00MB

ERROR RequestId: 2630a398-8b5e-487b-8d82-e42d95cd33a4 Result: {"errorCode": -1, "errorMessage": "145 code exit unexpected", "statusCode": 443}

END RequestId: 2630a398-8b5e-487b-8d82-e42d95cd33a4

Report RequestId: 2630a398-8b5e-487b-8d82-e42d95cd33a4 Duration: 0ms Memory: 256MB MemUsage: 0.000000MB

//云函数代码
const sharp = require('sharp');
const fs = require('fs');
const path = require('path');
const cloud = require('wx-server-sdk');


cloud.init({
    env: cloud.DYNAMIC_CURRENT_ENV
});
const db = cloud.database();


const processImage = async (tempPath, savePath, targetSizeKB = 100) => {
    const outputPath = path.join(savePath, `${Date.now()}.jpg`);
    const maxSize = targetSizeKB * 1024; 


    try {
        const metadata = await sharp(tempPath).metadata();


        let quality = 80;
        let buffer = await sharp(tempPath)
            .flatten({
                background: '#ffffff'
            }) // 移除透明背景
            .jpeg({
                quality
            })
            .toBuffer();


        while (buffer.length > maxSize && quality > 30) {
            quality -= 10;
            buffer = await sharp(buffer)
                .jpeg({
                    quality
                })
                .toBuffer();
        }


        fs.writeFileSync(outputPath, buffer);
        return outputPath;
    } catch (err) {
        return new Error(`图片处理失败: ${err.message}`);
    }
};


exports.main = async (event, context) => {
    var cloudImgPath = processImage(event.img, event.path)
    if (typeof (cloudImgPath) === String) {
        return {
            code: "100",
            img: cloudImgPath,
            msg: "success"
        }
    } else {
        return {
            code: "500",
            img: cloudImgPath,
            msg: "fail"
        }
    }
}