fix: nil error
fix: nil error

tomz/ruby-spark,tomz/ruby-spark,ondra-m/ruby-spark,ondra-m/ruby-spark,ondra-m/ruby-spark,ondra-m/ruby-spark,tomz/ruby-spark,tomz/ruby-spark,ondra-m/ruby-spark,tomz/ruby-spark,ondra-m/ruby-spark,tomz/ruby-spark