FIX:加'关注'的判断条件

@@ -336,7 +336,7 @@ class BSWorkbook(Workbook):
             metadata_dict = json.loads(metadata)
             metadata_dict = json.loads(metadata)
             author = metadata_dict.pop('author', '')
             author = metadata_dict.pop('author', '')
             producer = metadata_dict.pop('producer', '')
             producer = metadata_dict.pop('producer', '')
-            if author != '' or 'iText' not in producer or 'Qt' not in producer or 'Haru Free' not in producer:
+            if author != '' or ('iText' not in producer and 'Qt' not in producer and 'Haru Free' not in producer):
                 self.need_follow = True
                 self.need_follow = True
             metadata_rows.append(('Author', author))
             metadata_rows.append(('Author', author))
             metadata_rows.append(('Producer', producer))
             metadata_rows.append(('Producer', producer))