I've got a custom quest I'm working on but one script won't compile, can somebody help? This is the error I got:

Starting 1 compile threads for 1 files... Compiling "CAHTIF02001D93"... C:\Program Files (x86)\TSEV Skyrim LE\Data\Scripts\Source\temp\CAH_TIF02001D93.psc(11,23): variable PotentialFollowerFaction is undefined C:\Program Files (x86)\TSEV Skyrim LE\Data\Scripts\Source\temp\CAH_TIF02001D93.psc(12,23): variable CurrentFollowerFaction is undefined C:\Program Files (x86)\TSEV Skyrim LE\Data\Scripts\Source\temp\CAH_TIF02001D93.psc(13,25): variable CurrentFollowerFaction is undefined No output generated for CAH_TIF_02001D93, compilation failed. Batch compile of 1 files finished. 0 succeeded, 1 failed. Failed on CAHTIF_02001D93

Pastebin: https://pastebin.com/srzrA9Y9

After following advice I got here when I got a chance to try it, on the fragment in the quest window I clicked the Properties box, then clicked Add, then selected Faction as the type, and type CurrentFollowerFaction as the name and hit OK. Instead of it filling in the faction I instantly got the error below: Starting 1 compile threads for 1 files... Compiling "CAHTIF02001D93"... C:\Program Files (x86)\TSEV Skyrim LE\Data\Scripts\Source\CAH_TIF02001D93.psc(24,17): script property CurrentFollowerFaction already defined C:\Program Files (x86)\TSEV Skyrim LE\Data\Scripts\Source\CAH_TIF02001D93.psc(24,17): script variable ::CurrentFollowerFaction_var already defined C:\Program Files (x86)\TSEV Skyrim LE\Data\Scripts\Source\CAH_TIF02001D93.psc(24,17): script property CurrentFollowerFaction already has a get function defined C:\Program Files (x86)\TSEV Skyrim LE\Data\Scripts\Source\CAH_TIF02001D93.psc(24,17): script property CurrentFollowerFaction already has a set function defined No output generated for CAH_TIF_02001D93, compilation failed. Batch compile of 1 files finished. 0 succeeded, 1 failed. Failed on CAHTIF_02001D93

There was no way to continue on with the rest of the advice "Hit "Auto-Fill" and it should fill it with the correct value, if CurrentFollwerFaction is the actual name of the faction you want. If not, select it from the dropdown. Do the same for PotentialFollowerFaction."