The CoFH API of railcraft is outdated. The CoFH API of railcraft has the owner "CoFHAPI". But since the version 1.4 of the cofh api the name of the api owner is "cofhapi".
https://github.com/Railcraft/Railcraft/blob/mc-1.10.2/src/api/java/cofh/api/energy/package-info.java#L5
https://github.com/CoFH/CoFHLib/blob/1.10.2/src/main/java/cofh/api/energy/package-info.java#L5

Duplicate of #1203