Writing to KQL db from notebook - Error

Am following this link => Use Fabric notebooks with data from a KQL database - Microsoft Fabric | Microsoft Learn to write directly from notebook to KQL db, but gettting below error;

Py4JJavaError: An error occurred while calling o4856.save. : kusto_connector_shaded.com.microsoft.azure.kusto.data.exceptions.DataServiceException: IOException when trying to retrieve cluster metadata:xxxxxxxx.kusto.windows.net

Here is my code:

from pyspark.sql import SparkSession
from pyspark.sql.functions import col, lit, round
from datetime import datetime

# Welcome to your new notebook
# Type here in the cell editor to add code!
# The Kusto cluster uri to write the data. The query Uri is of the form https://<>.kusto.data.microsoft.com 
kustoUri = "https://xxxxxx.kusto.data.microsoft.com"
# The database to write the data
database = "BRDS"
# The table to write the data 
table    = "Metrics"
# The access credentials for the write
accessToken = mssparkutils.credentials.getToken(kustoUri)
print(accessToken)
# Generate a range of 5 rows with Id's 5 to 9
data = spark.range(5, 10).withColumnRenamed("id", "Id")

# Add columns for ProcessName, CpuUsage, MemoryUsage, and Timestamp
data = data.withColumn("ProcessName", lit("Process_") + col("Id").cast("string")) \
           .withColumn("CpuUsage", round(lit(10.0) * col("Id") / 10, 2)) \
           .withColumn("MemoryUsage", round(lit(20.0) * col("Id") / 10, 2)) \
           .withColumn("Timestamp", lit(datetime.now().strftime('%Y-%m-%d %H:%M:%S')))
data.show()
# Write data to a Kusto table
data.write.\
    format("com.microsoft.kusto.spark.synapse.datasource").\
    option("kustoCluster",kustoUri).\
    option("kustoDatabase",database).\
    option("kustoTable", table).\
    option("accessToken", accessToken ).\
    option("tableCreateOptions", "CreateIfNotExist").mode("Append").save()

Any clues!