How to fix Internal Error: Compilation Error


Please check the below mentioned attached error code CS1061 and suggest me how to fix internal error:

# Did u try to fix the warnings first? - incomplete upgrade

Hi iamuramit,

Could you please add some more insight to it , what steps you did before you start getting this error? 



Hi iamuramit,

It seems you have performed a server upgrade sometime earlier, but you have not completed it (see Incomplete Upgrade warnings for Richwidgets and Users module). 

Did you upload and publish System_Components.osp file from the Platform Server Installation folder afterwards?

Also, after that make sure to publish all modules in your environment in order to update them.