I am getting the same error when I use this  correlation_coefficient = FOREACH (GROUP correlation_data ALL) GENERATE PiggyBank.COR(correlation_data.age, correlation_data.avg_glucose_level) AS correlation; Error: 2023-11-15 10:02:09,087 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1070: Could not resolve PiggyBank.COR using imports: [, java.lang., org.apache.pig.builtin., org.apache.pig.impl.builtin.] could you please help me out  ... View more