diff --git a/lib/crawler/api/config.rb b/lib/crawler/api/config.rb
index 5bb8d1b..5611d5f 100644
--- a/lib/crawler/api/config.rb
+++ b/lib/crawler/api/config.rb
@@ -344,7 +344,7 @@ def document_mapper
       # Receives a crawler event object and outputs it into relevant systems
       def output_event(event)
         # Log the event
-        # event_logger << "#{event.to_json}\n"
+        event_logger << "#{event.to_json}\n"
 
         # Count stats for the crawl
         stats.update_from_event(event)
diff --git a/lib/crawler/url_validator.rb b/lib/crawler/url_validator.rb
index 4013e42..bb78a8c 100644
--- a/lib/crawler/url_validator.rb
+++ b/lib/crawler/url_validator.rb
@@ -67,6 +67,10 @@ class InvalidCrawlConfigError < Error; end
     attr_reader :raw_url, :checks, :results, :url_crawl_result
 
     def initialize(url:, crawl_config:, checks: nil)
+      if configuration && configuration.crawler_domains.empty?
+        raise InvalidCrawlConfigError, 'Please configure at least one domain in the crawl config file.'
+      end
+
       @crawl_config = crawl_config
       # Default to running all checks for the given context
       checks ||= valid_checks
diff --git a/lib/crawler/url_validator/url_request_check_concern.rb b/lib/crawler/url_validator/url_request_check_concern.rb
index 468b26e..0b9c076 100644
--- a/lib/crawler/url_validator/url_request_check_concern.rb
+++ b/lib/crawler/url_validator/url_request_check_concern.rb
@@ -123,7 +123,7 @@ def redirect_validation_result(details) # rubocop:disable Metrics/AbcSize
       end
 
       # If we're running in a domain context, this is an inter-domain redirect that we cannot follow
-      unless @crawl_config
+      unless configuration
         return validation_fail(:url_request, <<~MESSAGE, details)
           The web server at #{url} redirected us to a different domain URL (#{location}).
           If you want to crawl this site, please use #{location.domain_name} as the domain name.