[R] script execution stops and give the error

[Neha gupta]

  When I run my code, I get the following error and suddenly the execution
of the script stops. Where in my data is the problem?

Something is wrong; all the MAE metric values are missing:
      RMSE        Rsquared        MAE
 Min.   : NA   Min.   : NA   Min.   : NA
 1st Qu.: NA   1st Qu.: NA   1st Qu.: NA
 Median : NA   Median : NA   Median : NA
 Mean   :NaN   Mean   :NaN   Mean   :NaN
 3rd Qu.: NA   3rd Qu.: NA   3rd Qu.: NA
 Max.   : NA   Max.   : NA   Max.   : NA
 NA's   :8     NA's   :8     NA's   :8
Error: Stopping

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