no endcity´s

[FireTable]

hi, not long ago i started a server with a friend. and when we defeated the enderDragon, we went to find endcity´s, but there wasn't any, i got confused and opened a singleplayer on the same seed and the endcity´s where there but not on the server. can anyone help fix this?  

[Echology]

Make sure that generating structures is on via the dashboard. I believe if this setting is off, end cities will not generate, as well as villages and other structures that usually naturally generate.