Resolve module import issue

Signed-off-by: Jael Gu <mengjia.gu@zilliz.com>

vggish.py

@@ -13,7 +13,10 @@
 # limitations under the License.
 
 import logging
+import warnings
+
 import os
+import sys
 import numpy
 from pathlib import Path
 
@@ -23,10 +26,9 @@ from towhee.operator.base import NNOperator
 from towhee.models.vggish.torch_vggish import VGG
 from towhee import register
 
+sys.path.append(str(Path(__file__).parent))
 import vggish_input
 
-import warnings
-
 warnings.filterwarnings('ignore')
 log = logging.getLogger()