Python script causing An exception occurred while connecting with SAP system: ("unhashable type: 'dict'",)

Question

Here is my python script that tries to pull data from a SAP table into AWS Glue.

from pyrfc import Connection
import pandas as pd
## Variables
sap_table = 'TABLENAME' # SAP Table Name
fields = ["FIELD1", "FIELD2"] # List of fields 
options = [""] 
max_rows = 10
from_row = 0 
try:
# Establish SAP RFC connection
    conn = Connection(ashost='mysapserver.com', sysnr='00', client='000', user='username', passwd='password') 
    print(f"SAP Connection successful – connection object: {conn}")
    if conn:
    # Read SAP Table information
        tables = conn.call("RFC_READ_TABLE", QUERY_TABLE=sap_table, DELIMITER='|', FIELDS=fields, OPTIONS=options, ROWCOUNT=max_rows, ROWSKIPS=from_row) 
        # Access specific row & column information from the SAP Data 
        data = tables["DATA"] # pull the data part of the result set
        columns = tables["FIELDS"] # pull the field name part of the result set
        df = pd.DataFrame(data, columns = columns)
        if df:
            print(f"Successfully extracted data from SAP using custom RFC - Printing the top 5 rows: {df.head(5)}") 
        else:
            print("No data returned from the request. Please check database/schema details")
    else:
        print("Unable to connect with SAP. Please check connection details")
except Exception as e:
    print(f"An exception occurred while connecting with SAP system: {e.args}")

This results in the following error:

An exception occurred while connecting with SAP system: ("unhashable type: 'dict'",)

Traceback (most recent call last): File "<string>", line 19, in <module> File "/usr/local/lib64/python3.11/site-packages/pandas/core/frame.py", line 851, in init

It successfully connects so I am thinking it is the syntax around the table, field names.