Google Apps Script cache stopped working today - google-apps-script

Question

I used Google Apps Script Cache's putAll() for 21600 seconds. It has been working for months today just stopped working - all get from cache return null. The script reads a .csv file with about 90K entries, remove unwanted chars then caches using putAll() method. I tested the same file with the same script in my Dev's project it works fine. So somehow it does not work in my Production project. The code exactly the same, below:
My production's project id: Vendor Retainer GAS - project-id-5629958634838222671
There is no errors reported.
function cacheVendorList() {
var dataFilesFolder = DriveApp.getFolderById(dataFileFolderId);
var fileIt = dataFilesFolder.getFilesByName("VendorFile.csv");
if (fileIt != null && fileIt.hasNext()) {
var vendorFile = fileIt.next();
var keyValueStr = "{" + vendorFile.getAs(MimeType.PLAIN_TEXT).getDataAsString().
replace(/SAP,NAME,CMPY,CURRENCY/,'99,Test').
replace(/[^a-zA-Z0-9 ,\n]/g,' ').
replace(/$/mg,'",').
replace(/^\d+,/mg,
function(x) {
return '"' + x.substring(0,x.length-1) + '": "';
}).
replace(/D ",\n",$/,'D "') + "}";
//dataFilesFolder.createFile("VendorFile.txt", keyValueStr, MimeType.PLAIN_TEXT);
//Logger.log(keyValueStr);
var keyValObj = eval("(" + keyValueStr + ")");
// create a new vendor cache
vendorCache.putAll(keyValObj, 21600); // 21600 cache it for 6 hours
Logger.log("0000010100: " + vendorCache.get("0000010100"));
Logger.log("0090000435: " + vendorCache.get("0090000435"));
Logger.log("Got it");
}
}