Warning messages:
1: In identical(e, .EmptyEnv) :
  closing unused connection 13 (<-localhost.localdomain:11528)
2: In identical(e, .EmptyEnv) :
  closing unused connection 12 (<-localhost.localdomain:11528)
3: In identical(e, .EmptyEnv) :
  closing unused connection 11 (<-localhost.localdomain:11528)
4: In identical(e, .EmptyEnv) :
  closing unused connection 10 (<-localhost.localdomain:11528)
5: In identical(e, .EmptyEnv) :
  closing unused connection 9 (<-localhost.localdomain:11528)
6: In identical(e, .EmptyEnv) :
  closing unused connection 8 (<-localhost.localdomain:11528)
7: In identical(e, .EmptyEnv) :
  closing unused connection 7 (<-localhost.localdomain:11528)
8: In identical(e, .EmptyEnv) :
  closing unused connection 6 (<-localhost.localdomain:11528)
9: In identical(e, .EmptyEnv) :
  closing unused connection 5 (<-localhost.localdomain:11528)
10: In identical(e, .EmptyEnv) :
  closing unused connection 4 (<-localhost.localdomain:11528)
Error in { : task 28 failed - "cannot open the connection"
Calls: %dopar% -> <Anonymous>
Execution halted