hpyhacking/peatio · error

Missing helper: '{}'

Error message

Missing helper: '{}'

What it means

Error "Missing helper: '{}'" thrown in hpyhacking/peatio.

Source

Thrown at app/assets/javascripts/swagger-ui/lib/handlebars-1.0.0.js:71

  } else {
    if (inverse) { fn.not = inverse; }
    this.helpers[name] = fn;
  }
};

Handlebars.registerPartial = function(name, str) {
  if (toString.call(name) === objectType) {
    Handlebars.Utils.extend(this.partials,  name);
  } else {
    this.partials[name] = str;
  }
};

Handlebars.registerHelper('helperMissing', function(arg) {
  if(arguments.length === 2) {
    return undefined;
  } else {
    throw new Error("Missing helper: '" + arg + "'");
  }
});

Handlebars.registerHelper('blockHelperMissing', function(context, options) {
  var inverse = options.inverse || function() {}, fn = options.fn;

  var type = toString.call(context);

  if(type === functionType) { context = context.call(this); }

  if(context === true) {
    return fn(this);
  } else if(context === false || context == null) {
    return inverse(this);
  } else if(type === "[object Array]") {
    if(context.length > 0) {
      return Handlebars.helpers.each(context, options);
    } else {

View on GitHub (pinned to dab8641137)

Solutions

1. Register the helper with Handlebars.registerHelper() before rendering the template, or fix the misspelled helper name in the template.

When it happens

Trigger: Thrown at app/assets/javascripts/swagger-ui/lib/handlebars-1.0.0.js:71 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of hpyhacking/peatio@dab8641137 (2026-08-23). Data as JSON: /api/errors/43f2dbc7f239de60. Report an issue: GitHub.