Warning messages:
1: In for (i in 2:length(e)) { :
  closing unused connection 13 (<-localhost.localdomain:11403)
2: In for (i in 2:length(e)) { :
  closing unused connection 12 (<-localhost.localdomain:11403)
3: In for (i in 2:length(e)) { :
  closing unused connection 11 (<-localhost.localdomain:11403)
4: In for (i in 2:length(e)) { :
  closing unused connection 10 (<-localhost.localdomain:11403)
5: In for (i in 2:length(e)) { :
  closing unused connection 9 (<-localhost.localdomain:11403)
6: In for (i in 2:length(e)) { :
  closing unused connection 8 (<-localhost.localdomain:11403)
7: In for (i in 2:length(e)) { :
  closing unused connection 7 (<-localhost.localdomain:11403)
8: In for (i in 2:length(e)) { :
  closing unused connection 6 (<-localhost.localdomain:11403)
9: In for (i in 2:length(e)) { :
  closing unused connection 5 (<-localhost.localdomain:11403)
10: In for (i in 2:length(e)) { :
  closing unused connection 4 (<-localhost.localdomain:11403)
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Saving 7 x 3.72 in image
Error in { : task 28 failed - "cannot open the connection"
Calls: %do% -> <Anonymous>
In addition: There were 25 warnings (use warnings() to see them)
Execution halted