Could not build spark session in Jupyter

Hi All

I could not start or build spark session in Jupyter notebook through Anaconda.
I am using below versions.
Anaconda - 2.5.2 and pyspark - 3.4.1

While building the spark session using below command, kernel is going to busy state always, but all other commands are completing in seconds.

spark=SparkSession.builder.appName(“JupyterNotebook”).getOrCreate()

Regards
Balaji TK