error while trying to start Docker Sandbox

I’m getting below error while trying to start the Sandbox related to the quick start guide that shows how to configure the MongoDB Kafka Connector to send data between MongoDB and Apache Kafka.

=> ERROR [2/2] RUN confluent-hub install --no-prompt confluentinc/kafka-connect-datagen:latest 4.4s

[2/2] RUN confluent-hub install --no-prompt confluentinc/kafka-connect-datagen:latest:
#0 1.251 Running in a “–no-prompt” mode
#0 3.171 PKIX path building failed: unable to find valid certification path to requested target
#0 3.171
#0 3.171 Error: Unknown error

failed to solve: executor failed running [/bin/sh -c confluent-hub install --no-prompt confluentinc/kafka-connect-datagen:latest]: exit code: 7