Error Category: UNCLASSIFIED_ERROR; An error occurred while calling o99.getJDBCSink. The connection attempt failed.

I got the error when write glue dynamic data frame to redshift table . The code I have used :- my_conn_op={ "dbtable":"public.xxxx", "database":"dev" }

redshift_results=glueContext.write_dynamic_frame.from_jdbc_conf( frame=dyn1, catalog_connection="Redshift connection", connection_options=my_conn_op, redshift_tmp_dir="s3://XXXXXXXXXX/temp_redshift/" )

The error I got

Error Category: UNCLASSIFIED_ERROR; An error occurred while calling o99.getJDBCSink. The connection attempt failed.