Analyzing yelp data with pig coursera quiz?

Getting the following error message in pig -x local or pig -x mapreduce in grunt shellERROR org.apache.pig.tools.grunt.Grunt - ERROR 1070: Could not r

Getting the following error message in pig -x local or pig -x mapreduce in grunt shell

ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1070: Could not resolve org.apache.pig.storage.CSVLoader using imports: [, java.lang., org.apache.pig.builtin., org.apache.pig.impl.builtin.]

or:Getting the following error message in pig -x local or pig -x mapreduce in grunt shellERROR org.apache.pig.tools.grunt.Grunt - ERROR 1070: Could not resolve org.apache.pig.storage.CSVLoader using imports: [, java.lang., org.apache.pig.builtin., org.apache.pig.impl.builtin.]

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