GPT 接口返回401/429/500 的时候，偶现的json 解析异常

[CharlesTHN]

异常信息：

cn.hutool.json.JSONException: A JSONObject text must begin with '{' at 1 [character 2 line 1]
	at cn.hutool.json.JSONTokener.syntaxError(JSONTokener.java:450)
	at cn.hutool.json.JSONParser.parseTo(JSONParser.java:48)
	at cn.hutool.json.ObjectMapper.mapFromTokener(ObjectMapper.java:243)
	at cn.hutool.json.ObjectMapper.mapFromStr(ObjectMapper.java:219)
	at cn.hutool.json.ObjectMapper.map(ObjectMapper.java:98)
	at cn.hutool.json.JSONObject.<init>(JSONObject.java:210)
	at cn.hutool.json.JSONObject.<init>(JSONObject.java:187)
	at cn.hutool.json.JSONObject.<init>(JSONObject.java:142)
	at cn.hutool.json.JSONObject.<init>(JSONObject.java:125)
	at cn.hutool.json.JSONUtil.parseObj(JSONUtil.java:88)
	at cn.hutool.json.JSONUtil.toBean(JSONUtil.java:420)
	at com.unfbx.chatgpt.interceptor.OpenAiResponseInterceptor.intercept(OpenAiResponseInterceptor.java:32)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
	at okhttp3.logging.HttpLoggingInterceptor.intercept(HttpLoggingInterceptor.kt:154)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)
	at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:201)
	at okhttp3.internal.connection.RealCall.execute(RealCall.kt:154)
	at retrofit2.OkHttpCall.execute(OkHttpCall.java:204)
	at retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:46)
	at io.reactivex.Observable.subscribe(Observable.java:10151)
	at retrofit2.adapter.rxjava2.BodyObservable.subscribeActual(BodyObservable.java:35)
	at io.reactivex.Observable.subscribe(Observable.java:10151)
	at io.reactivex.internal.operators.observable.ObservableSingleSingle.subscribeActual(ObservableSingleSingle.java:35)
	at io.reactivex.Single.subscribe(Single.java:2517)
	at io.reactivex.Single.blockingGet(Single.java:2001)
	at com.unfbx.chatgpt.OpenAiClient.chatCompletion(OpenAiClient.java:699)