Fix failed to fetch events on Doorkeeper due to Faraday gem's update

Author: yasulab

lib/event_service/providers/doorkeeper.rb

@@ -6,7 +6,7 @@ class Doorkeeper
 
         def initialize
           @client = EventService::Client.new(ENDPOINT) do |c|
-            c.authorization(:Bearer, ENV.fetch('DOORKEEPER_API_TOKEN'))
+            c.request :authorization, 'Bearer', ENV.fetch('DOORKEEPER_API_TOKEN')
           end
           @default_since = '2010-07-01'.to_date.beginning_of_day
           @default_until = Time.zone.yesterday.end_of_day

lib/statistics/tasks/doorkeeper.rb

@@ -18,7 +18,8 @@ def initialize(dojos, period)
       def run
         @dojos.each do |dojo|
           dojo.dojo_event_services.for(:doorkeeper).each do |dojo_event_service|
-            @client.fetch_events(**@params.merge(group_id: dojo_event_service.group_id)).each do |e|
+            events = @client.fetch_events(**@params.merge(group_id: dojo_event_service.group_id))
+            (events || []).compact.each do |e|
               next unless e['group'].to_s == dojo_event_service.group_id
 
               EventHistory.create!(dojo_id:          dojo.id,