I'm getting the same warnings relating to the NERVA. Here are all of the LOG file entries relating to the NERVA:
[LOG 2019-09-09 11:45:59.397] Deleting node in file WarpPlugin/Parts/Engines/NERVA/NERVA subnode: @PART[nuclearEngine]:FOR[WarpPlugin]/MODULE:NEEDS[FeatureRadiation] as it can't satisfy its NEEDS
[LOG 2019-09-09 11:45:59.397] Deleting node in file WarpPlugin/Parts/Engines/NERVA/NERVA subnode: @PART[nuclearEngine]:FOR[WarpPlugin]/MODULE:NEEDS[FeatureRadiation] as it can't satisfy its NEEDS
[LOG 2019-09-09 11:45:59.397] Deleting node in file WarpPlugin/Parts/Engines/NERVA/NERVA subnode: @PART[nuclearEngine]:FOR[WarpPlugin]/RESOURCE:NEEDS[FeatureRadiation] as it can't satisfy its NEEDS
[WRN 2019-09-09 11:45:59.397] more than one pass specifier detected, ignoring all but the first: WarpPlugin/Parts/Engines/NERVA/NERVA/@PART[nuclearEngine]:NEEDS[FeatureReliability]:AFTER[Kerbalism]:FOR[WarpPlugin]
[LOG 2019-09-09 11:45:59.397] Deleting root node in file WarpPlugin/Parts/Engines/NERVA/NERVA node: @PART[nuclearEngine]:NEEDS[FeatureReliability]:AFTER[Kerbalism]:FOR[WarpPlugin] as it can't satisfy its NEEDS
[WRN 2019-09-09 11:45:59.397] more than one pass specifier detected, ignoring all but the first: WarpPlugin/Parts/Engines/NERVA/NERVA/@PART[nuclearEngine]:NEEDS[ReStock]:AFTER[zKerbalAtomics]:FOR[WarpPlugin]
[LOG 2019-09-09 11:45:59.397] Deleting root node in file WarpPlugin/Parts/Engines/NERVA/NERVA node: @PART[nuclearEngine]:NEEDS[ReStock]:AFTER[zKerbalAtomics]:FOR[WarpPlugin] as it can't satisfy its AFTER
Here is the warning line fromt he bottom of the LOG file:
[WRN 2019-09-09 11:46:56.375] 2 warnings related to GameData/WarpPlugin/Parts/Engines/NERVA/NERVA.cfg
I hope this helps.