diff --git a/src/lib/parseM3u8.ts b/src/lib/parseM3u8.ts
index f2e4512..209dd29 100644
--- a/src/lib/parseM3u8.ts
+++ b/src/lib/parseM3u8.ts
@@ -14,6 +14,10 @@ export async function parseM3U8(content: string, url = process.cwd(), cacheDir =
     }
   }
 
+  if (!content) {
+    logger.error('获取播放列表为空！', url);
+  }
+
   logger.debug('starting parsing m3u8 file:', url);
 
   let parser = new Parser();
diff --git a/src/lib/ts-download.ts b/src/lib/ts-download.ts
index 1f59f28..2bc5789 100644
--- a/src/lib/ts-download.ts
+++ b/src/lib/ts-download.ts
@@ -25,7 +25,7 @@ export async function tsDownload(info: TsItemInfo, cryptoInfo: M3u8Crypto) {
 
     logger.warn('[TS-Download][failed]', r.response.statusCode, info.uri);
   } catch (e) {
-    logger.error('[TS-Download][error]', (e as Error).message || e);
+    logger.error('[TS-Download][error]', (e as Error)?.message || e || 'unkown');
   }
 
   return false;
@@ -39,6 +39,7 @@ function aesDecrypt(data: Buffer, cryptoInfo: M3u8Crypto) {
 
 if (!isMainThread && parentPort) {
   parentPort.on('message', (data: WorkerTaskInfo) => {
+    if (data.options.debug) logger.updateOptions({ levelType: 'debug' });
     if (data.options?.headers) request.setHeaders(data.options.headers);
     tsDownload(data.info, data.crypto).then(success => {
       parentPort.postMessage({ success, info: data.info });
diff --git a/src/lib/utils.ts b/src/lib/utils.ts
index 2adb471..0d038f1 100644
--- a/src/lib/utils.ts
+++ b/src/lib/utils.ts
@@ -10,7 +10,15 @@ export const getRetry = <T = string>(url: string, retries = 3) =>
     () => request.get<T>(url, null, {}, { rejectUnauthorized: false }),
     1000,
     retries,
-    r => r.response.statusCode === 200
+    r => {
+      if (r.response.statusCode !== 200) {
+        console.log();
+        logger.warn(`[retry][${url}][${r.response.statusCode}]`, r.response.statusMessage || r.data);
+        // throw Error(`[${r.response.statusCode}]${r.response.statusMessage || r.data}`);
+      }
+
+      return r.response.statusCode === 200;
+    }
   );
 
 export const logger = NLogger.getLogger('[M3U8-DL]', { color });
diff --git a/src/lib/worker_pool.ts b/src/lib/worker_pool.ts
index 5c36315..7b764c0 100644
--- a/src/lib/worker_pool.ts
+++ b/src/lib/worker_pool.ts
@@ -70,6 +70,7 @@ export class WorkerPool<T = unknown, R = unknown> extends EventEmitter {
     });
 
     worker.on('error', err => {
+      console.error('worker error', err);
       // 如果发生未捕获的异常：调用传递给 `runTask` 并出现错误的回调。
       const r = this.workerTaskInfo.get(worker);
       if (r) {