{"id":"294e05deff07ff19","repo":"gofiber/fiber","slug":"failed-to-parse-w","errorCode":null,"errorMessage":"failed to parse: %w","messagePattern":"failed to parse: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"res.go","lineNumber":792,"sourceCode":"\t\t\t\t\treturn err\n\t\t\t\t}\n\n\t\t\t\trendered = true\n\t\t\t\tbreak\n\t\t\t}\n\t\t}\n\t}\n\n\tif !rendered {\n\t\t// Render raw template using 'name' as filepath if no engine is set\n\t\tvar tmpl *template.Template\n\t\tif _, err := readContent(buf, name); err != nil {\n\t\t\treturn err\n\t\t}\n\t\t// Parse template\n\t\ttmpl, err := template.New(\"\").Parse(rootApp.toString(buf.Bytes()))\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"failed to parse: %w\", err)\n\t\t}\n\t\tbuf.Reset()\n\t\t// Render template\n\t\tif err := tmpl.Execute(buf, bind); err != nil {\n\t\t\treturn fmt.Errorf(\"failed to execute: %w\", err)\n\t\t}\n\t}\n\n\tresponse := &r.c.fasthttp.Response\n\n\t// Set Content-Type to text/html\n\tresponse.Header.SetContentType(MIMETextHTMLCharsetUTF8)\n\t// Set rendered template to body\n\tresponse.SetBody(buf.Bytes())\n\n\treturn nil\n}\n","sourceCodeStart":774,"sourceCodeEnd":810,"githubUrl":"https://github.com/gofiber/fiber/blob/9a4c7e57fe0b080a04235d28a4b0d2b4b353d58c/res.go#L774-L810","documentation":"In Render's fallback path (used when no Views engine is configured), Fiber reads the file at 'name' and parses it with Go's html/template. This error means the file content has Go-template syntax errors: unclosed action, bad delimiter, or an unexpected token.","triggerScenarios":"Calling c.Render(\"./views/broken.tmpl\", data) with no app.Config.Views, where broken.tmpl contains invalid Go template syntax such as '{{ .Name ' (unclosed action) or malformed delimiters.","commonSituations":"Using Render as a raw file loader for hand-written Go templates with syntax errors; mixing engine syntax (e.g. pongo/jet) with text/template rules; templates edited in production.","solutions":["Fix the Go template syntax in the file (close actions, valid delimiters).","Alternatively, configure app.Config.Views with a gofiber/template engine for richer features and clearer errors.","Validate templates offline with text/template/html-template before deploying."],"exampleFix":"// broken.tmpl:  <h1>{{ .Title </h1>   // unclosed action -> failed to parse\n// fixed.tmpl:   <h1>{{ .Title }}</h1>","handlingStrategy":"validation","validationCode":"// validate a template file parses before serving\nfunc templateParses(path string) error {\n    b, err := os.ReadFile(path)\n    if err != nil { return err }\n    _, err = template.New(\"\").Parse(string(b))\n    return err\n}","typeGuard":null,"tryCatchPattern":"if err := c.Render(name, bind); err != nil {\n    if strings.Contains(err.Error(), \"failed to parse\") {\n        log.Errorf(\"template syntax error in %s: %v\", name, err)\n        return fiber.ErrInternalServerError\n    }\n    return err\n}","preventionTips":["Validate Go templates at build time.","Prefer a dedicated Views engine over the raw fallback.","Don't edit templates directly in production."],"tags":["template","parse","fiber"],"analyzedSha":"9a4c7e57fe0b080a04235d28a4b0d2b4b353d58c","analyzedAt":"2026-08-04T21:44:03.395Z","schemaVersion":2}