TypeError: Cannot read properties of undefined (reading 'xpath:["count(/HTML/BODY/UL/LI)"]') at Object.<anonymous> (../timetravel/test/DomStateGenerator.test.ts:114:19)

TypeError: Cannot read properties of undefined (reading 'xpath:["count(/HTML/BODY/DIV[@Class=\"slider\"][@Style=\"width: 50%;\"])"]') at Object.<anonymous> (../timetravel/test/DomStateGenerator.test.ts:157:19)