Fix nil exception
```
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x1805900]
goroutine 1 [running]:
github.com/guardllamanet/guardllama/internal/cli/glminstaller.trackRunE.func1.1()
/home/runner/work/guardllama/guardllama/internal/cli/glminstaller/report.go:105 +0x50
github.com/guardllamanet/guardllama/internal/cli/glminstaller.trackRunE.func1(0x40006fe600?, {0x33a9a98, 0x0, 0x0})
/home/runner/work/guardllama/guardllama/internal/cli/glminstaller/report.go:112 +0x234
github.com/spf13/cobra.(*Command).execute(0x40006fe600, {0x33a9a98, 0x0, 0x0})
/home/runner/work/guardllama/guardllama/vendor/github.com/spf13/cobra/command.go:916 +0x5c4
github.com/spf13/cobra.(*Command).ExecuteC(0x40006fe300)
/home/runner/work/guardllama/guardllama/vendor/github.com/spf13/cobra/command.go:1044 +0x340
github.com/spf13/cobra.(*Command).Execute(...)
/home/runner/work/guardllama/guardllama/vendor/github.com/spf13/cobra/command.go:968
github.com/guardllamanet/guardllama/internal/cli/glminstaller.Main()
/home/runner/work/guardllama/guardllama/internal/cli/glminstaller/glminstaller.go:36 +0x1e8
main.main()
/home/runner/work/guardllama/guardllama/cmd/glm-installer/main.go:11 +0x1c
```