头一次遇到和平台相关的问题，模拟器，微信小游戏，iPhone 8p （iOS 14.6）上运行都正常，但是在老机器iPhone 5c （iOS 10.3.3）上第一个场景挂载的脚本都无法正常运行，但是可以看到场景已经出来。报错信息如下，找不到对应的类，工程中新建了一个helloworld 场景，挂一个最简单的hello world 脚本也是找不到挂载的脚本类：
JS: Cocos Creator v2.4.6
JS: [WARN]: Can not find class 'ba9f7msqjRAD7bhWmJjObNa’
JS: InitScene: 4.304000000000087ms
JS: AttachPersist: 0.73700000000008ms
JS: AutoRelease: 1.4020000000000437ms
JS: Destroy: 0.04399999999986903ms
JS: [WARN]: Script attached to ‘Canvas’ is missing or invalid.
JS: Activate: 154.71399999999994ms
就不再输出其他log了。
//====================================
对比正常的机器，出错的机器上有如下错误log打出：
ScriptEngine::evalString script assets/main/index.64cb1.js, failed!
ERROR: TypeError: global is not an Object. (evaluating ‘“URLSearchParams” in global’), location: assets/main/index.64cb1.js:1300:44
STACK:
assets/main/index.64cb1.js:1300:44
assets/main/index.64cb1.js:1295:77
assets/main/index.64cb1.js:1296:7
s@assets/main/index.64cb1.js:18:19
assets/main/index.64cb1.js:20:17
assets/main/index.64cb1.js:3149:12
s@assets/main/index.64cb1.js:18:19
assets/main/index.64cb1.js:20:17
assets/main/index.64cb1.js:4526:38
s@assets/main/index.64cb1.js:18:19
e@assets/main/index.64cb1.js:26:39
global code@assets/main/index.64cb1.js:28:2
require@[native code]
jsb-adapter/jsb-engine.js:3345:19
download@jsb-adapter/jsb-engine.js:3356:9
downloadScript@jsb-adapter/jsb-engine.js:3344:11
jsb-adapter/jsb-engine.js:3512:19
jsb-adapter/jsb-engine.js:3185:31
readFile@jsb-adapter/jsb-engine.js:3151:29
readJson@jsb-adapter/jsb-engine.js:3173:21
parseJson@jsb-adapter/jsb-engine.js:3470:11
download@jsb-adapter/jsb-engine.js:3356:9
downloadJson@jsb-adapter/jsb-engine.js:3482:11
downloadBundle@jsb-adapter/jsb-engine.js:3504:15
invoke@src/cocos2d-jsb.3f542.js:18895:19
process@src/cocos2d-jsb.3f542.js:18905:21
retry@src/cocos2d-jsb.3f542.js:20509:16
download@src/cocos2d-jsb.3f542.js:18929:16
fetch@src/cocos2d-jsb.3f542.js:19451:23
_flow@src/cocos2d-jsb.3f542.js:19901:13
async@src/cocos2d-jsb.3f542.js:19896:19
src/cocos2d-jsb.3f542.js:19434:35
forEach@src/cocos2d-jsb.3f542.js:20602:62
load@src/cocos2d-jsb.3f542.js:19416:14
_flow@src/cocos2d-jsb.3f542.js:19901:13
src/cocos2d-jsb.3f542.js:19910:25
preprocess@src/cocos2d-jsb.3f542.js:19969:11
_flow@src/cocos2d-jsb.3f542.js:19901:13
async@src/cocos2d-jsb.3f542.js:19896:19
loadAny@src/cocos2d-jsb.3f542.js:17519:23
loadRemote@src/cocos2d-jsb.3f542.js:17556:21
loadBundle@src/cocos2d-jsb.3f542.js:17579:24
cb@main.js:110:39
src/cocos2d-jsb.3f542.js:17563:37
src/cocos2d-jsb.3f542.js:19079:75
createBundle@src/cocos2d-jsb.3f542.js:19062:31
create@src/cocos2d-jsb.3f542.js:19073:15
src/cocos2d-jsb.3f542.js:17562:32
src/cocos2d-jsb.3f542.js:20680:15
src/cocos2d-jsb.3f542.js:43211:19
fireTimeout@jsb-adapter/jsb-builtin.js:2191:24
tick@jsb-adapter/jsb-builtin.js:2148:14
//=================================
查看assets/main/index.64cb1.js:1300:44的源码如下：
var global = "undefined" !== typeof globalThis && globalThis || "undefined" !== typeof self && self || "undefined" !== typeof global && global;
var support = {
searchParams: "URLSearchParams" in global, //这一行出错，看不懂，不知道什么意思？
iterable: "Symbol" in global && "iterator" in Symbol,
blob: "FileReader" in global && "Blob" in global && function() {
try {
new Blob();
return true;
} catch (e) {
return false;
}
}(),
formData: "FormData" in global,
arrayBuffer: "ArrayBuffer" in global
};
//======================
有大佬能指点一下该从哪里去查吗？谢谢了