Nomad Job - Failed to place all allocations - nomad

Question

I’m trying to deploy an AWS EBS volume via nomad but I’m this below error. How do I resolve it?
$ nomad job plan -var-file bambootest.vars bamboo2.nomad
+/- Job: “bamboo2”
+/- Stop: “true” => “false”
+/- Task Group: “main” (1 create)
Volume {
AccessMode: “single-node-writer”
AttachmentMode: “file-system”
Name: “bambootest”
PerAlloc: “false”
ReadOnly: “false”
Source: “bambootest”
Type: “csi”
}
Task: “web”
Scheduler dry-run:
WARNING: Failed to place all allocations.
Task Group “main” (failed to place 1 allocation):
Class “system”: 3 nodes excluded by filter
Class “svt”: 2 nodes excluded by filter
Class “devtools”: 2 nodes excluded by filter
Class “bambootest”: 2 nodes excluded by filter
Class “ambt”: 2 nodes excluded by filter
Constraint “${meta.namespace} = bambootest”: 9 nodes excluded by filter
Constraint “missing CSI Volume bambootest”: 2 nodes excluded by filter
Below is an excerpt of the volume block that seems to be the problem.
group main {
count = 1
volume "bambootest" {
type = "csi"
source = "bambootest"
read_only = false
access_mode = "single-node-writer"
attachment_mode = "file-system"
}
task web {
driver = "docker"