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ubuntu@VM-12-6-ubuntu:~/SCADA-python$ python3 database_util.py 
Traceback (most recent call last):
  File "/home/ubuntu/.local/lib/python3.8/site-packages/sqlalchemy/engine/base.py", line 1412, in execute
    meth = statement._execute_on_connection
AttributeError: 'str' object has no attribute '_execute_on_connection'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "database_util.py", line 240, in <module>
    work()
  File "database_util.py", line 81, in work
    create_table(conn1, ems_tables)
  File "database_util.py", line 129, in create_table
    connection.execute(drop_lang % table["name"])
  File "/home/ubuntu/.local/lib/python3.8/site-packages/sqlalchemy/engine/base.py", line 1414, in execute
    raise exc.ObjectNotExecutableError(statement) from err
sqlalchemy.exc.ObjectNotExecutableError: Not an executable object: 'drop table if exists ems_rtu_info'