{"record":{"id":"c665f2e42796a9a6","repo":"emberjs/ember.js","slug":"unexpected-missing-in-call-head","errorCode":null,"errorMessage":"Unexpected missing () in call head","messagePattern":"Unexpected missing \\(\\) in call head","errorType":"exception","errorClass":"Error","httpStatus":null,"severity":"error","filePath":"packages/@glimmer/compiler/lib/builder/builder-interface.ts","lineNumber":340,"sourceCode":"    }\n  }\n}\n\nfunction extractBlockHead(name: string): NormalizedHead {\n  const result = /^(#|!)(.*)$/u.exec(name);\n\n  if (result === null) {\n    throw new Error(`Unexpected missing # in block head`);\n  }\n\n  return normalizeDottedPath(result[2] as string);\n}\n\nfunction normalizeCallHead(name: string): NormalizedHead {\n  const result = /^\\((.*)\\)$/u.exec(name);\n\n  if (result === null) {\n    throw new Error(`Unexpected missing () in call head`);\n  }\n\n  return normalizeDottedPath(result[1] as string);\n}\n\nfunction normalizePath(head: string, tail: string[] = []): NormalizedHead {\n  const pathHead = normalizePathHead(head);\n\n  if (isPresentArray(tail)) {\n    return {\n      type: GET_PATH_EXPR,\n      path: {\n        head: pathHead,\n        tail,\n      },\n    };\n  } else {\n    return {","sourceCodeStart":322,"sourceCodeEnd":358,"githubUrl":"https://github.com/emberjs/ember.js/blob/26f97246a8bf2e28edf26ac3093da2e86c04ffc5/packages/@glimmer/compiler/lib/builder/builder-interface.ts#L322-L358","documentation":"Error \"Unexpected missing () in call head\" thrown in emberjs/ember.js.","triggerScenarios":"Thrown at packages/@glimmer/compiler/lib/builder/builder-interface.ts:340 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"26f97246a8bf2e28edf26ac3093da2e86c04ffc5","analyzedAt":"2026-09-01T05:01:28.182Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}