mattermost / mattermost/mattermost-plugin-github
Panic when loading lhs-content
Nobody has claimed this yet.
- Dominant language
- Go
- Stars
- 179
- Forks
- 180
- Avg merge
- 1d 16h
- Merged PRs (30d)
- 13
Description
Not sure what caused it, it's not happening frequently, I just noticed it while checking the Mattermost log for something else:
```
warn [2026-02-26 15:20:33.614 +01:00] Recovered from a panic caller="app/plugin_api.go:1134" plugin_id=github url=/api/v1/lhs-content error="runtime error: invalid memory address or nil pointer dereference" stack="goroutine 6385881 [running]:
runtime/debug.Stack()
runtime/debug/stack.go:26 +0x5e
github.com/mattermost/mattermost-plugin-github/server/plugin.(*Plugin).withRecovery-fm.(*Plugin).withRecovery.func1.1()
github.com/mattermost/mattermost-plugin-github/server/plugin/api.go:197 +0x65
panic({0xed36e0?, 0x19b7220?})
runtime/panic.go:792 +0x132
net/url.(*URL).String(0xe3c460?)
net/url/url.go:833 +0x2c
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql.newGithubIssue(0x0, {0x0, 0x0}, {0x0, 0x0}, {0x12143e0?}, {0xc001284450?}, {{0x0, 0x0, 0x0}}, ...)
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql/lhs_request.go:194 +0x8c
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql.newIssueFromAssignmentResponse(0xf021e0?)
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql/lhs_request.go:175 +0x345
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql.(*Client).fetchLHSData(0xc000e523c0, {0x121c6e8, 0xc000f077a0}, {0x0, 0x0, 0x0}, {0x0, 0x0, 0x0}, {0x0, ...}, ...)
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql/lhs_request.go:107 +0xde8
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql.(*Client).GetLHSData(0xc000e523c0, {0x121c6e8, 0xc000f077a0})
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql/lhs_request.go:46 +0x350
github.com/mattermost/mattermost-plugin-github/server/plugin.(*Plugin).getLHSData(0xffffffffffffffff?, 0xc000e52380)
github.com/mattermost/mattermost-plugin-github/server/plugin/api.go:1041 +0x2d
github.com/mattermost/mattermost-plugin-github/server/plugin.(*Plugin).getSidebarData(0xc0000e0000, 0xc000e52380)
github.com/mattermost/mattermost-plugin-github/server/plugin/api.go:1050 +0x2c
github.com/mattermost/mattermost-plugin-github/server/plugin.(*Plugin).getSidebarContent(0xc0000e0000, 0xc000e52380, {0x121b690, 0xc0004f0e70}, 0xc000de8101?)
github.com/mattermost/mattermost-plugin-github/server/plugin/api.go:1064 +0x2b
github.com/mattermost/mattermost-plugin-..."
warn [2026-02-26 15:20:33.616 +01:00] Recovered from a panic caller="app/plugin_api.go:1134" plugin_id=github url=/api/v1/lhs-content error="runtime error: invalid memory address or nil pointer dereference" stack="goroutine 6385862 [running]:
runtime/debug.Stack()
runtime/debug/stack.go:26 +0x5e
github.com/mattermost/mattermost-plugin-github/server/plugin.(*Plugin).withRecovery-fm.(*Plugin).withRecovery.func1.1()
github.com/mattermost/mattermost-plugin-github/server/plugin/api.go:197 +0x65
panic({0xed36e0?, 0x19b7220?})
runtime/panic.go:792 +0x132
net/url.(*URL).String(0xe30001?)
net/url/url.go:833 +0x2c
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql.newGithubIssue(0x0, {0x0, 0x0}, {0x0, 0x0}, {0x12143e0?}, {0xc002c84180?}, {{0x0, 0x0, 0x0}}, ...)
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql/lhs_request.go:194 +0x8c
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql.newIssueFromAssignmentResponse(0xf021e0?)
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql/lhs_request.go:175 +0x345
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql.(*Client).fetchLHSData(0xc000e56800, {0x121c6e8, 0xc000e62bd0}, {0x0, 0x0, 0x0}, {0x0, 0x0, 0x0}, {0x0, ...}, ...)
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql/lhs_request.go:107 +0xde8
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql.(*Client).GetLHSData(0xc000e56800, {0x121c6e8, 0xc000e62bd0})
github.com/mattermost/mattermost-plugin-github/server/plugin/graphql/lhs_request.go:46 +0x350
github.com/mattermost/mattermost-plugin-github/server/plugin.(*Plugin).getLHSData(0xffffffffffffffff?, 0xc000e567c0)
github.com/mattermost/mattermost-plugin-github/server/plugin/api.go:1041 +0x2d
github.com/mattermost/mattermost-plugin-github/server/plugin.(*Plugin).getSidebarData(0xc0000e0000, 0xc000e567c0)
github.com/mattermost/mattermost-plugin-github/server/plugin/api.go:1050 +0x2c
github.com/mattermost/mattermost-plugin-github/server/plugin.(*Plugin).getSidebarContent(0xc0000e0000, 0xc000e567c0, {0x121b690, 0xc000d094c0}, 0xc000a60f01?)
github.com/mattermost/mattermost-plugin-github/server/plugin/api.go:1064 +0x2b
github.com/mattermost/mattermost-plugin-..."
```
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start in server/plugin/graphql/lhs_request.go at GetLHSData and fetchLHSData, then follow newIssueFromAssignmentResponse to newGithubIssue around line 194. Use the /api/v1/lhs-content path and the supplied stack trace to investigate the intermittent nil pointer dereference. Done means loading lhs-content no longer recovers this panic.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- go
- Domain
- api, backend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100