plugin options error for gatsby-plugin.manifest

[ibrent]

I did a clean npm and gatsby update, then tried your starter, but got this error when trying to start the develop server:

brent@MBP-b13 gatsby-react-bootstrap-starter % gatsby develop
success open and validate gatsby-configs - 0.081s
error Invalid plugin options for "gatsby-plugin-manifest":

• "value" must contain at least one of [icon, icons]
  error Invalid plugin options for "gatsby-plugin-manifest":

• "value" must contain at least one of [icon, icons]
  not finished load plugins - 0.460s

In order to make it start, I had to add this ICON link to these options:

gatsby-plugin-sharp,
{
resolve: gatsby-plugin-manifest,
options: {
icon: "src/favicon.png",
name: gatsby-starter-react-bootstrap,
short_name: react-bootstrap,
start_url: /,
background_color: #20232a,
theme_color: #20232a,
display: minimal-ui,
},
},

[ibrent]

Seems related to this issue?
gatsbyjs/gatsby#28963