Custom DashBoard Missing Icon

[DC11011100]

I've added a custom dashboard as per this documentation. However, as shown in the attached image of my dashboard, the icon is missing.

Visiting font awesome, as mentioned in the documentation example's comments, I notice icon 'area-chart' has been renamed 'chart-area'. I updated to 'chart-area' as shown below in a snippet of my implementation, but the icon remains empty.

import requests
import time

from flask import Flask
from flask import render_template

from buildbot.process.results import statusToString`

app_buildMetrics = Flask('test', root_path=os.path.dirname(__file__))
# this allows to work on the template without having to restart Buildbot
app_buildMetrics.config['TEMPLATES_AUTO_RELOAD'] = True

@app_buildMetrics.route("/index.html")
def main():
    builders = app_buildMetrics.buildbot_api.dataGet("/builders")
    builds = app_buildMetrics.buildbot_api.dataGet("/builds", limit=20)

    # Generate some filler data
    graph_data = []
    from random import randint
    for i in range(500,600):
        graph_data.append(dict(x = i,
                               y = randint(i - 500,100)))

    # Render the updated html and pass in the optional variables to be rendered with
    return render_template('app_buildMetrics.html', 
                           builders   = builders, 
                           builds     = builds,
                           graph_data = graph_data)

def getAppDict(url_suffix, menu_title, flask_app, menu_spot, menu_icon):
    return dict({
                    'name'    : url_suffix,
                    'caption' : menu_title,
                    'app'     : flask_app,
                    'order'   : menu_spot,
                    'icon'    : menu_icon
                })
    
# Add to BB instance
c['www']['plugins']['wsgi_dashboards'] = []
c['www']['plugins']['wsgi_dashboards'].append(getAppDict('build-metrics',
                                                         'Build Metrics',
                                                         app_buildMetrics,
                                                         3,
                                                         u'chart-area'))`

And a corresponding http.log snippet

"xxx.xxx.xxx.xx" - - [31/May/2018:20:01:24 +0000] "GET /fonts/fontawesome-webfont.woff?v=4.1.0 HTTP/1.1" 200 83760 "http://build64-1:8010/styles.css" "Mozilla/5.0 (Windows NT 6.1; Win64; x64;

[scottalthoff]

I experience this too. Any luck in solving this?