Python: JDBC Connection Error using JayDeBeApi

I'm facing an error while running following code. Please help me solving this issue or suggest an alternative way to connect Vertica server via JDBC.

I have also tried connecting using pyspark. But with pyspark we are not able to execute sql query in vertica server.

System Configuration:

Linux with python 3.7.0

jaydebeapi version - 1.1.1

jpype version - 0.7.2

import jaydebeapi
import jpype

jdbc_url = 'jdbc:vertica://XX.XX.XXX.XXX/DATA?XXXXX'
vertica_properties={"user": "XXXX", "password": "XXXXX"}

jars = ['XXXX/vertica-jdbc-9.3.1-0.jar', 
        'XXXX/vertica-spark2.1_scala2.11.jar', 
        'XXXX/CustomVerticaDialect.jar']

connection = jaydebeapi.connect(jclassname='com.vertica.jdbc.Driver', url=jdbc_url, driver_args=vertica_properties, jars=jars)
connection

ERROR

--------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-5-cc7d2752ecd8> in <module>()
----> 1 connection = jaydebeapi.connect(jclassname='com.vertica.jdbc.Driver', url=jdbc_url, driver_args=vertica_properties, jars=jars)
      2 connection

/BDAPP/python/anaconda3/lib/python3.7/site-packages/jaydebeapi/__init__.py in connect(jclassname, url, driver_args, jars, libs)
    379     else:
    380         libs = []
--> 381     jconn = _jdbc_connect(jclassname, url, driver_args, jars, libs)
    382     return Connection(jconn, _converters)
    383 

/BDAPP/python/anaconda3/lib/python3.7/site-packages/jaydebeapi/__init__.py in _jdbc_connect_jpype(jclassname, url, driver_args, jars, libs)
    180         types = jpype.java.sql.Types
    181         types_map = {}
--> 182         for i in types.__javaclass__.getClassFields():
    183             types_map[i.getName()] = i.getStaticAttribute()
    184         _init_types(types_map)

AttributeError: type object 'java.sql.Types' has no attribute '__javaclass__'