JetStream is multi-tenant so you will need to check that your account is enabled for JetStream and is not limited. You can view your limits as follows:
$ nats account info
Connection Information:
Client ID: 8
Client IP: 127.0.0.1
RTT: 178.545µs
Headers Supported: true
Maximum Payload: 1.0 MiB
Connected URL: nats://localhost:4222
Connected Address: 127.0.0.1:4222
Connected Server ID: NCCOHA6ONXJOGAEZP4WPU4UJ3IQP2VVXEPRKTQCGBCW4IL4YYW4V4KKL
JetStream Account Information:
Memory: 0 B of 5.7 GiB
Storage: 0 B of 11 GiB
Streams: 0 of Unlimited
Max Consumers: unlimited