google apps script - sheet.getProtections no longer works?

Question

I have a script that automatically protects a range of past Dates in my Sheet.

I use the standard sheet.getProtections(SpreadsheetApp.ProtectionType.RANGE);

It worked fine for several months but it has not worked since yesterday.

Is there any modifications on the implementations ?

Thank you

PS : the sheet object is well returned in my tests

var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("TRAVAUX");
var debug = sheet.getName();
var protections = sheet.getProtections(SpreadsheetApp.ProtectionType.RANGE);

Error message when running the function

Service error: Spreadsheets

Answer 1

There seem to be several developers with this problem, it might be a bug or a temporary problem.

The issue has been reported on Public Issue Tracker. Give it a "star" to indicate that you are also affected.