There will be no more crashes with this plugin on 1.16.3 and 1.16.4.
 Special thanks to 
SlimeDog and 
drives_a_ford for this update! They've helped me a lot. 
 
 
 There is one new option in the config file:
 
 
 
  Code (Text):
 
 
 
  # If false, the 'vehicle' mob will be considered
  
 # when deciding whether or not to use GES for spawning
  
 # If true, the 'riding' mob will be considered
  
 # for the same effect
  
 on-jockey-use-rider: false
 
 
 It's recommended to use 
ProtocolLib for the best mob spawning with riders.