scala - sbt run fails whereas sbt package succeeds -

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please have problem running chisel code. when sbt package, success. when sbt run, fails , following error: code error

i suspected data not loaded correctly array not initialized or forgot initialize array, arrays initialised.

so please question correct way load data in chisel?

this did:

val data = io.source.fromfile(args(0)).getlines().map(_.split(",").map(_.todouble))                 .zipwithindex                 .map{ case(data, id) => (id.tolong, data)}.toarray

where args array of strings defined such 

def main(args: array[string]): unit = {...

looking forward responses
thank you!

looks exception when you're trying access args(0) (if that's on line 24 in main.scala).

when sbt run you're not passing command line arguments main. add args after sbt run this: sbt run foo bar





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