Minor parsing issue

src/parser/parser.py

@@ -169,7 +169,7 @@ class Parser(ABC):
         :param str table_name: Name of the table to find
         :return list(Cell): Cells of the table
         """
-        for table in worksheet._tables:
+        for table in worksheet.tables.values():
             if table.name == table_name:
                 return worksheet[table.ref]
         raise TitanParsingError("Table " + table_name + " does not exist in sheet " + str(worksheet))
@@ -182,7 +182,7 @@ class Parser(ABC):
         :param str table_name: Name of the table to find
         :return boolean: if the table is empty
         """
-        for table in worksheet._tables:
+        for table in worksheet.tables.values():
             if table.name == table_name:
                 cells = worksheet[table.ref]
                 if len(cells) == 2: