Forcing to stop refresh token thread

lib/splitclient-rb/engine/push_manager.rb

@@ -33,6 +33,7 @@ def start_sse
 
       def stop_sse
         @sse_handler.stop
+        SplitIoClient::Helpers::ThreadHelper.stop(:schedule_next_token_refresh, @config)
       rescue StandardError => e
         @config.logger.error(e.inspect)
       end

lib/splitclient-rb/split_config.rb

@@ -320,7 +320,7 @@ def init_impressions_mode(impressions_mode, adapter)
         return :debug
       else
         default = adapter == :redis ? :debug : :optimized
-        @logger.error("You passed an invalid impressions_mode, impressions_mode should be one of the following values: :debug, :optimized or :none. Defaulting to #{default} mode")
+        @logger.error("You passed an invalid impressions_mode, impressions_mode should be one of the following values: :debug, :optimized or :none. Defaulting to #{default} mode") unless impressions_mode.nil?
         return default
       end
     end

lib/splitclient-rb/sse/event_source/client.rb

@@ -92,7 +92,7 @@ def connect_stream(latch)
 
               raise 'eof exception' if partial_data == :eof
             rescue Errno::EBADF, IOError => e
-              @config.logger.error(e.inspect)
+              @config.logger.error(e.inspect) if @config.debug_enabled
               return nil
             rescue StandardError => e
               return nil if ENV['SPLITCLIENT_ENV'] == 'test'