diff --git a/lib/Dhalang/configuration.rb b/lib/Dhalang/configuration.rb
index 7d25627..0630e6d 100644
--- a/lib/Dhalang/configuration.rb
+++ b/lib/Dhalang/configuration.rb
@@ -55,9 +55,9 @@ class Configuration
     private attr_accessor :screenshot_options
     private attr_accessor :jpeg_options
 
-    # @param [Hash]   custom_options               Changes that should override default.
+    # @param [Hash]   custom_options        Changes that override default.
     # @param [String] page_url              Url for Puppeteer to visit.
-    # @param [String] temp_file_path        Absolute path of temp file to write results of scripts towards.
+    # @param [String] temp_file_path        Absolute path of temp file to use for writing script results.
     #                                       Can be nil for scripts using stdout.
     # @param [String] temp_file_extension   Extension of temp file. Can be nil for scripts using stdout.
     def initialize(custom_options, page_url, temp_file_path = nil, temp_file_extension = nil)
diff --git a/lib/Dhalang/node_script_invoker.rb b/lib/Dhalang/node_script_invoker.rb
index b649164..19b11e3 100644
--- a/lib/Dhalang/node_script_invoker.rb
+++ b/lib/Dhalang/node_script_invoker.rb
@@ -3,8 +3,8 @@ class NodeScriptInvoker
 
     # Executes JS script under given script_path by launching a new Node process.
     #
-    # @param [String] script_path           Absolute path of the JS script to execute.
-    # @param [Configuration] configuration         Configuration to use by j.
+    # @param [String] script_path           Absolute path of JS script to execute.
+    # @param [Configuration] configuration  Configuration to use.
     def self.execute_script(script_path, configuration)
       command = create_node_command(script_path, configuration)
       Open3.popen2e(command) do |_stdin, stdouterr, wait|
@@ -17,10 +17,10 @@ def self.execute_script(script_path, configuration)
       end
     end
 
-    # Returns a [String] with the node command to invoke the provided script with the configuration.
+    # Returns a [String] with node command that invokes the provided script with the configuration.
     #
     # @param [String] script_path           Absolute path of JS script to invoke.
-    # @param [Object] configuration         JSON with options to use for Puppeteer.
+    # @param [Configuration] configuration  Configuration to use.
     private_class_method def self.create_node_command(script_path, configuration)
       "node #{script_path} #{Shellwords.escape(configuration.json)}"
     end
diff --git a/lib/js/screenshot-generator.js b/lib/js/screenshot-generator.js
index 7062b4a..3ed6aa1 100644
--- a/lib/js/screenshot-generator.js
+++ b/lib/js/screenshot-generator.js
@@ -20,6 +20,7 @@ const createScreenshot = async () => {
             ...configuration.screenshotOptions
         });
     } catch (error) {
+        console.error(error.message);
         process.exit(1);
     } finally {
         if (browser) {