{"record":{"id":"eb52f17ad2846728","repo":"ahmetb/kubectx","slug":"contexts-entry-is-nil","errorCode":null,"errorMessage":"\"contexts\" entry is nil","messagePattern":"\"contexts\" entry is nil","errorType":"console","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/kubeconfig/contextmodify.go","lineNumber":55,"sourceCode":"\t\t},\n\t)\n}\n\n// ModifyCurrentContext always writes to the first file (matching kubectl behavior).\nfunc (k *Kubeconfig) ModifyCurrentContext(name string) error {\n\tif len(k.files) == 0 {\n\t\treturn errNoFiles\n\t}\n\treturn k.files[0].config.PipeE(yaml.SetField(\"current-context\", yaml.NewScalarRNode(name)))\n}\n\nfunc (k *Kubeconfig) ModifyContextName(old, new string) error {\n\tcontext, _, err := k.contextNodeWithFileIndex(old)\n\tif err != nil {\n\t\treturn err\n\t}\n\tif context == nil {\n\t\treturn errors.New(\"\\\"contexts\\\" entry is nil\")\n\t}\n\treturn context.PipeE(yaml.SetField(\"name\", yaml.NewScalarRNode(new)))\n}\n","sourceCodeStart":37,"sourceCodeEnd":59,"githubUrl":"https://github.com/ahmetb/kubectx/blob/12ad6fb22e8c546ee2b54e7de38aa51c906832f7/internal/kubeconfig/contextmodify.go#L37-L59","documentation":"Guard error in Kubeconfig.ModifyContextName: contextNodeWithFileIndex located the context entry, but the returned node is nil — the 'contexts' list entry for the old name has no YAML node to rename. This is a defensive check against a malformed or empty contexts entry before applying the kyaml rename.","triggerScenarios":"Thrown at internal/kubeconfig/contextmodify.go:55 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Inspect the kubeconfig with `kubectl config view` for a malformed 'contexts' entry","Remove and re-add the broken context entry, then retry the rename"],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"12ad6fb22e8c546ee2b54e7de38aa51c906832f7","analyzedAt":"2026-09-02T12:23:10.107Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-09T16:17:10.729Z"}