Delete Multiple Transactions not working.

public async removeNotificationFromNovu(transactionId: string) {
        try {
            console.log('To delete transaction Id: ', transactionId);
            // const API_URL = `${this.BACKEND_URL}/v1/events/trigger/${transactionId}`;
            // const headers = {
            //     'Content-Type': 'application/json',
            //     Authorization: `ApiKey ${this.API_KEY}`,
            // };
            // const resp = await axios.delete(API_URL, { headers });
            const resp = await this.novu.events.cancel(transactionId);
            console.log('API RESP: ', resp.status, resp.data);
            if (resp.status !== 200) {
                throw new Error(`Error while deleting notification: ${resp.statusText}`);
            }
            if (resp.data?.data) {
                return {
                    message: 'success',
                };
            }
            return {
                message: 'Failure. No notification found for the given transactionId',
            };
        } catch (e: any) {
            throw new Error(`Error while calling delete notification API: ${e.message}`);
        }
    }

public async removeNotificationFromNovu(transactionId: string) {
        try {
            console.log('To delete transaction Id: ', transactionId);
            // const API_URL = `${this.BACKEND_URL}/v1/events/trigger/${transactionId}`;
            // const headers = {
            //     'Content-Type': 'application/json',
            //     Authorization: `ApiKey ${this.API_KEY}`,
            // };
            // const resp = await axios.delete(API_URL, { headers });
            const resp = await this.novu.events.cancel(transactionId);
            console.log('API RESP: ', resp.status, resp.data);
            if (resp.status !== 200) {
                throw new Error(`Error while deleting notification: ${resp.statusText}`);
            }
            if (resp.data?.data) {
                return {
                    message: 'success',
                };
            }
            return {
                message: 'Failure. No notification found for the given transactionId',
            };
        } catch (e: any) {
            throw new Error(`Error while calling delete notification API: ${e.message}`);
        }
    }

public async triggerNotificationToNovu({ triggerId, sendTo, payload: notificationPayload }: NovuRepoParams) {
        const { payload } = notificationPayload;
        if (sendTo.length === 0) {
            throw new Error('No users found to send notification to');
        }
        const subscribers = sendTo.map((s) => ({ subscriberId: s }));
        try {
            const novuResponse = await this.novu.trigger(triggerId, {
                to: subscribers,
                payload: payload,
            });
            const { acknowledged, status, transactionId } = novuResponse.data.data;
            return {
                acknowledged,
                status,
                transactionId,
            };
        } catch (e) {
            throw new Error(`Error while sending notification to Novu: ${e.message}`);
        }
    }

public async triggerNotificationToNovu({ triggerId, sendTo, payload: notificationPayload }: NovuRepoParams) {
        const { payload } = notificationPayload;
        if (sendTo.length === 0) {
            throw new Error('No users found to send notification to');
        }
        const subscribers = sendTo.map((s) => ({ subscriberId: s }));
        try {
            const novuResponse = await this.novu.trigger(triggerId, {
                to: subscribers,
                payload: payload,
            });
            const { acknowledged, status, transactionId } = novuResponse.data.data;
            return {
                acknowledged,
                status,
                transactionId,
            };
        } catch (e) {
            throw new Error(`Error while sending notification to Novu: ${e.message}`);
        }
    }