Changes not having any effect out of nowhere - google-apps-script

Question

I was working along and out of nowhere my changes stopped applying. The code functions up until the last logger instruction I wrote in.
Now any change I make to the code is acting like it isn't even there. I click save and run the code, but nothing I change actually takes effect. No instances of Logger.log("hello") do anything, but everything else runs as written.
//variables for shorthand calling of each spread sheet
var ssL = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("SpecsList");
var ssR = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("RequiredSpecs");
//count the number of columns to determine the max range of the spec comparison iterator
var specIteratorMax = ssL.getLastColumn() - 2; // the -2 is to ignore column A which is text and rebase the iterator variable to 0
function runHeatMap() {
//voltage spec compare section
Logger.log("hello");
//retrieve the users preferred output voltage rating
var voltReqed = ssR.getRange("A2").getValue();
Logger.log(voltReqed);
//retrieve the output voltage ratings of all devices
var voltCompareData = ssL.getSheetValues(3, 2, 1, (ssL.getLastColumn() - 1)).flat();
Logger.log(voltCompareData);
Logger.log("hello");
Logger.log(specIteratorMax);
//store current iteration voltage spec and conduct comparison operations
for (var i = 0; i <= specIteratorMax; i++) {
var voltSpec = voltCompareData[i];
Logger.log(voltSpec);
if(voltSpec >= voltReqed) {
ssL.getRange(3,i + 2).setBackground("green");
}
else if(voltSpec < voltReqed && voltSpec >= (voltReqed * 0.95)) {
ssL.getRange(3,i + 2).setBackground("orange");
}
else {
ssL.getRange(3,i + 2).setBackground("red");
}
}
Logger.log("hello");
}

Answer 1

It seems to run on random data
I reduced it down to this:
function runHeatMap() {
var sh0 = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Sheet0");
var sh1 = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("Sheet1");
var max = sh0.getLastColumn() - 2;
var v1 = sh1.getRange("A2").getValue();
var vs = sh0.getSheetValues(3, 2, 1, sh0.getLastColumn() - 1).flat();
for (var i = 0; i <= max; i++) {
var v2 = vs[i];
if (v2 >= v1) {
sh0.getRange(3, i + 2).setBackground("green");
}
else if (v2 < v1 && v2 >= (v1 * 0.95)) {
sh0.getRange(3, i + 2).setBackground("orange");
}
else {
sh0.getRange(3, i + 2).setBackground("red");
}
}
}