edit

service/extract/docs/pdf.py

@@ -9,7 +9,7 @@ class Pdf(Base):
             return False
 
         self.audio = ''
-        if 'audit' in self.param:
+        if 'audio' in self.param and self.param['audio']:
             # 有音频文件
             self.audio = self.param['audio']
             self.audio = Demeter.service('loader', 'extract').get(self.audio).json()