V1.15.1 regression - InstanceRef not provided #27838

Description

When running inside GitHub actions this error now happens whereas in v1.15.0 it did not.

Plugins

Github

OpenCode version

1.15.1

Steps to reproduce

Use OpenCode as a GitHub triggered action
Breaks.

Screenshot and/or share link

5s
##[debug]Resolved Keys:
##[debug]["opencode-Linux-X64-v1.15.1"]
##[debug]Checking zstd --quiet --version
##[debug]1.5.7
##[debug]zstd version: 1.5.7
##[debug][Request] GetCacheEntryDownloadURL https://results-receiver.actions.githubusercontent.com/twirp/github.actions.results.api.v1.CacheService/GetCacheEntryDownloadURL
##[debug][Response] - 200
##[debug]Headers: {
##[debug] "content-length": "56",
##[debug] "content-type": "application/json",
##[debug] "date": "Sat, 16 May 2026 07:16:56 GMT",
##[debug] "x-github-backend": "Kubernetes",
##[debug] "x-github-request-id": "1803:1DEE07:7416D1:8EF25E:6A0819E8"
##[debug]}
##[debug]Body: {
##[debug] "ok": false,
##[debug] "signed_download_url": "",
##[debug] "matched_key": ""
##[debug]}
##[debug]Cache not found for version baf7f83a1f13c2f8bbad7e5f5a7723eb37cf091ce877a761691f026e19f96edf of keys: opencode-Linux-X64-v1.15.1
Cache not found for input keys: opencode-Linux-X64-v1.15.1
##[debug]Node Action run completed with exit code 0
##[debug]Save intra-action state CACHE_KEY = opencode-Linux-X64-v1.15.1
##[debug]Finished: run
##[debug]Evaluating condition for step: 'run'
##[debug]Evaluating: (success() && (steps.cache.outputs.cache-hit != 'true'))
##[debug]Evaluating And:
##[debug]..Evaluating success:
##[debug]..=> true
##[debug]..Evaluating NotEqual:
##[debug]....Evaluating Index:
##[debug]......Evaluating Index:
##[debug]........Evaluating Index:
##[debug]..........Evaluating steps:
##[debug]..........=> Object
##[debug]..........Evaluating String:
##[debug]..........=> 'cache'
##[debug]........=> Object
##[debug]........Evaluating String:
##[debug]........=> 'outputs'
##[debug]......=> Object
##[debug]......Evaluating String:
##[debug]......=> 'cache-hit'
##[debug]....=> null
##[debug]....Evaluating String:
##[debug]....=> 'true'
##[debug]..=> true
##[debug]=> true
##[debug]Expanded: (true && (null != 'true'))
##[debug]Result: true
##[debug]Starting: run
##[debug]Loading inputs
##[debug]Loading env
Run curl -fsSL https://opencode.ai/install | bash
##[debug]/usr/bin/bash --noprofile --norc -e -o pipefail /home/runner/work/_temp/cd696fce-fe47-4903-8346-cb5c151cd398.sh

Installing opencode version: 1.15.1
#=#=#

(....)

Adding reaction...
InstanceRef not provided
Creating comment...
Removing reaction...
Error: InstanceRef not provided
Error: Process completed with exit code 1.
##[debug]Finished: run
##[debug]Finishing: Run anomalyco/opencode/github@latest

Operating System

Github runner

Terminal

No response