fix issues

internal/cmd_export.go

@@ -57,5 +57,9 @@ func exportCmd(ctx context.Context) error {
 	}
 
 	// https://t.me/yunpanshare/37426
-	return client.Channel(ctx, channel, cfg, modeHistory)
+	for {
+		if err := client.Channel(ctx, channel, cfg, modeHistory); err != nil {
+			return err
+		}
+	}
 }