error installing UTMStack: Get "http://127.0.0.1:9200/_cluster/health?timeout=50s&wait_for_status=green": dial tcp 127.0.0.1:9200: connect: connection refuse

[febry-commsol]

Hi, i'm having problem while installing UTMStack 11.

Here's what i get when installing:
root@kaikai:/opt# sudo ./installer

Installing UTMStack

Checking system requirements [OK]
Generating Stack configuration...
Balancing memory...
Memory distribution successful. Total Assigned: 12884MB (Available: 12884MB)
Getting UTMStack Latest Version [OK]
Installing UTMStack version v11.1.4-community. This may take a while.
Downloading images:
Downloading ghcr.io/utmstack/utmstack/postgres:latest... [OK]
Downloading ghcr.io/utmstack/utmstack/eventprocessor:v11.1.4-community... [OK]
Downloading ghcr.io/utmstack/utmstack/opensearch:latest... [OK]
Downloading ghcr.io/utmstack/utmstack/user-auditor:v11.1.4-community... [OK]
Downloading ghcr.io/utmstack/utmstack/frontend:v11.1.4-community... [OK]
Downloading ghcr.io/utmstack/utmstack/backend:v11.1.4-community... [OK]
Downloading ghcr.io/utmstack/utmstack/eventprocessor:v11.1.4-community... [OK]
Downloading ghcr.io/utmstack/utmstack/web-pdf:v11.1.4-community... [OK]
Downloading ghcr.io/utmstack/utmstack/agent-manager:v11.1.4-community... [OK]
Installing reverse proxy. This may take a while. [OK]
Initializing OpenSearch. This may take a while.
error installing UTMStack: Get "http://127.0.0.1:9200/_cluster/health?timeout=50s&wait_for_status=green": dial tcp 127.0.0.1:9200: connect: connection refuse

Any idea why? Thanks in davance

Best Regards,
febry