WIX Booking: createSession() error "entity_not_found"

Here is the full function:

export async function createNonRecurringSessions(sched, sdate, edate) {
     let dateTest = new Date(sdate)
    console.log("DateTest: ", dateTest)
    const options2 = { suppressAuth: true };
    try {
        let sessGet = await wixData.query("Bookings/Schedule").eq("_id", sched).find(options2)
        console.log("SessGet: ", sessGet.items)

        var sessionInfo = {
            scheduleId: sched,
            start: {
                timestamp: new Date(sdate)
            },
            end: {
                timestamp: new Date(edate)
            },
            type: "EVENT",
            tags: ["Blocked"]
        };
        console.log("Sessinfo: ", sessionInfo)
    } catch (err) {
        console.log("SessInfo Err: ", err)
    }
    try {
        console.log("Starting Create Session")
        let session = await sessions.createSession(sessionInfo, options2)
        let data = {
            eloggIns: eloggIns,
            session: session,
            success: true
        }
        wixData.insert("errorLogger", data, options)
        return session;
    } catch (err) {
        console.log('Failed to create session:', err);
        let data = {
            eloggIns: eloggIns,
            csCatcjErr: err,
            success: false
        }
        let ins = await wixData.insert("errorLogger", data, options)
        return ins

    }

}


And the Error: