R IF ELSE statement [duplicate]

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• if/else constructs inside and outside functions 2 answers

Maybe it's not the late hour but something in the following IF ELSE statement give me an error:

if (exists("lm_summary"))
    {
      col <- list(mnm_coef,cm,auc,lm_summary$coefficients,lm_summary$training_testing_error_ratio) 
    }

    else {
      col <- list(mnm_coef,cm,auc,NULL,NULL)
    }

output:

> if (exists("lm_summary"))
+     {
+       col <- list(mnm_coef,cm,auc,lm_summary$coefficients,lm_summary$training_testing_error_ratio) 
+     }
>     
>     else {
Error: unexpected 'else' in "    else"
>       col <- list(mnm_coef,cm,auc,NULL,NULL)
>     }
Error: unexpected '}' in "    }"
> 

idea?