The error seems to occur when trying to write the outputs.
Copying my outputs here for easy view:
[OutputVariables]
WhiteNoLat = "WhiteNoLat" # White (non-latino) population [people/cell]
Black = "Black" # Black population [people/cell]
Native = "Native" # Native American population [people/cell]
Asian = "Asian" # Asian population [people/cell]
Latino = "Latino" # Latino population [people/cell]
TotalPop = "TotalPop" # Total population [people/cell]
allcause = "allcause" # Total mortality rate [deaths/100000 people]
whnolmort = "whnolmort" # White (non-latino) mortality rate [deaths/100000 people]
blackmort = "blackmort" # Black mortality rate [deaths/100000 people]
nativemort = "nativemort" # Native American mortality rate [deaths/100000 people]
asianmort = "asianmort" # Asian mortality rate [deaths/100000 people]
latinomort = "latinomort" # Latino mortality rate [deaths/100000 people]
TotalPopD = "(exp(log(1.073)/10 * TotalPM25) - 1) * TotalPop * allcause / 100000" # Adjusted total mortality rate as a consequence of PM2.5 exposure [deaths/100,000 people]
WhitNoLatD = "(exp(log(1.073)/10 * TotalPM25) - 1) * WhiteNoLat * allcause / 100000" # Adjusted white (non-latino) mortality rate as a consequence of PM2.5 exposure [deaths/100,000 people]
BlackD = "(exp(log(1.073)/10 * TotalPM25) - 1) * Black * allcause / 100000" # Adjusted black mortality rate as a consequence of PM2.5 exposure [deaths/100,000 people]
NativeD = "(exp(log(1.073)/10 * TotalPM25) - 1) * Native * allcause / 100000" # Adjusted Native American mortality rate as a consequence of PM2.5 exposure [deaths/100,000 people]
AsianD = "(exp(log(1.073)/10 * TotalPM25) - 1) * Asian * allcause / 100000" # Adjusted asian mortality rate as a consequence of PM2.5 exposure [deaths/100,000 people]
LatinoD = "(exp(log(1.073)/10 * TotalPM25) - 1) * Latino * allcause / 100000" # Adjusted latino mortality rate as a consequence of PM2.5 exposure [deaths/100,000 people]
TotalPM25 = "PrimaryPM25 + pNH4 + pSO4 + pNO3 + SOA" # Total PM2.5 Concentration [micrograms/m^3]
SOx = "SOx" # SOx Concentration [micrograms/m^3]
NH3 = "NH3" # NH3 Concentration [micrograms/m^3]
NOx = "NOx" # NOx Concentration [micrograms/m^3]
VOC = "VOC" # VOC Concentration [micrograms/m^3]
PrimPM25 = "PrimaryPM25" # Primary PM2.5 Concentration [micrograms/m^3]
PSO4 = "pSO4" # pSO4 Concentration [micrograms/m^3]
PNO3 = "pNO3" # pNO3 Concentration [micrograms/m^3]
PNH4 = "pNH4" # pNH4 Concentration [micrograms/m^3]
SOA = "SOA" # SOA Concentration [micrograms/m^3]