github.com/shohhei1126/hugo@v0.42.2-0.20180623210752-3d5928889ad7/docs/content/en/functions/errorf.md (about)

     1  ---
     2  title: errorf
     3  linktitle: errorf
     4  description: Evaluates a format string and logs it to ERROR.
     5  date: 2017-09-30
     6  publishdate: 2017-09-30
     7  lastmod: 2017-09-30
     8  categories: [functions]
     9  menu:
    10    docs:
    11      parent: "functions"
    12  keywords: [strings, log, error]
    13  signature: ["errorf FORMAT INPUT"]
    14  workson: []
    15  hugoversion:
    16  relatedfuncs: [printf]
    17  deprecated: false
    18  aliases: []
    19  ---
    20  
    21  `errorf` will evaluate a format string, then output the result to the ERROR log.
    22  This will also cause the build to fail.
    23  
    24  ```
    25  {{ errorf "Something went horribly wrong! %s" err }}
    26  ```