ERROR: Could not validate credentials to Confluent Cloud Schema Registry. Please troubleshoot

Hi,

I'm getting the above error when trying to run the spring boot example.

I believe I have the Schema Registry set up and I've generated a schema registry key.

Here's my java.config:

`bootstrap.servers=pkc-l6wr6.europe-west2.gcp.confluent.cloud:9092
security.protocol=SASL_SSL
sasl.jaas.config=org.apache.kafka.common.security.plain.PlainLoginModule required username='[REMOVED KEY]' password='[REMOVED VALUE]';
sasl.mechanism=PLAIN

client.dns.lookup=use_all_dns_ips

session.timeout.ms=45000

acks=all

schema.registry.url=https://psrc-kk5gg.europe-west3.gcp.confluent.cloud
basic.auth.credentials.source=USER_INFO
schema.registry.basic.auth.user.info=[REMOVED KEY]:[REMOVED VALUE]`

I guess I've missed something?