Class not compiling

Question

We have been writing a java project and have come across an error when trying to compile. It is highlighting an error saying :

              ^
  symbol:   class Race
  location: class CyclingPortalImpl
CyclingPortalImpl.java:86: error: cannot find symbol
                        throw new IDNotRecognisedException("Race ID not recognised");

for every Exception we have written.

Thank you

We have double checked our packages and everything is where we believe it should be. Any ideas on how to fix this would be appreciated!