{"record":{"id":"7d17c60ead5fbd6a","repo":"Kong/insomnia","slug":"no-header-specified","errorCode":null,"errorMessage":"No header specified","messagePattern":"No header specified","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"packages/insomnia/src/common/templating/local-template-tags.ts","lineNumber":953,"sourceCode":"\n          if (request.parameters.length === 0) {\n            throw new Error('No query parameters available');\n          }\n\n          for (const queryParameter of request.parameters) {\n            const queryParameterName = await context.util.render(queryParameter.name);\n            queryParameterName && parameterNames.push(queryParameterName);\n            if (queryParameterName?.toLowerCase() === name.toLowerCase()) {\n              return context.util.render(queryParameter.value);\n            }\n          }\n\n          const parameterNamesStr = parameterNames.map(n => `\"${n}\"`).join(',\\n\\t');\n          throw new Error(`No query parameter with name \"${name}\".\\nChoices are [\\n\\t${parameterNamesStr}\\n]`);\n        }\n        if (attribute === 'header') {\n          if (!name) {\n            throw new Error('No header specified');\n          }\n\n          const headerNames: string[] = [];\n\n          if (request.headers.length === 0) {\n            throw new Error('No headers available');\n          }\n\n          for (const header of request.headers) {\n            const headerName = await context.util.render(header.name);\n            headerName && headerNames.push(headerName);\n            if (headerName?.toLowerCase() === name.toLowerCase()) {\n              return context.util.render(header.value);\n            }\n          }\n\n          const headerNamesStr = headerNames.map(n => `\"${n}\"`).join(',\\n\\t');\n          throw new Error(`No header with name \"${name}\".\\nChoices are [\\n\\t${headerNamesStr}\\n]`);","sourceCodeStart":935,"sourceCodeEnd":971,"githubUrl":"https://github.com/Kong/insomnia/blob/d9bb2b0142600f21309832daea3317942d285984/packages/insomnia/src/common/templating/local-template-tags.ts#L935-L971","documentation":"Error \"No header specified\" thrown in Kong/insomnia.","triggerScenarios":"Thrown at packages/insomnia/src/common/templating/local-template-tags.ts:953 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":"d9bb2b0142600f21309832daea3317942d285984","analyzedAt":"2026-08-26T18:04:05.187Z","schemaVersion":2},"datasetVersion":"2026-08-26T21:11:00.512Z"}