diff --git a/src/config.ts b/src/config.ts
index df9f070..57bf45c 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -6,12 +6,12 @@ import { version } from '../package.json';
 config();
 const isProduction = process.env.NODE_ENV === 'production';
 export const relayerVersion = version;
-export const netId = <availableIds>Number(process.env.NET_ID || 1);
+export const netId = <availableIds>Number(process.env.NET_ID ?? 1);
 export const redisUrl = process.env.REDIS_URL || 'redis://127.0.0.1:6379';
 export const rpcUrl = process.env.HTTP_RPC_URL;
-export const CONFIRMATIONS = Number(process.env.CONFIRMATIONS) || 4;
-export const MAX_GAS_PRICE = Number(process.env.MAX_GAS_PRICE) || 1000;
-export const BASE_FEE_RESERVE_PERCENTAGE = Number(process.env.BASE_FEE_RESERVE_PERCENTAGE) || 25;
+export const CONFIRMATIONS = Number(process.env.CONFIRMATIONS ?? 4);
+export const MAX_GAS_PRICE = Number(process.env.MAX_GAS_PRICE ?? 1000);
+export const BASE_FEE_RESERVE_PERCENTAGE = Number(process.env.BASE_FEE_RESERVE_PERCENTAGE ?? 25);
 export const mainnetRpcUrl = process.env.MAINNET_RPC_URL || process.env.ORACLE_RPC_URL || 'https://mainnet.infura.io/';
 export const oracleRpcUrl = process.env.ORACLE_RPC_URL || 'https://mainnet.infura.io/';
 export const offchainOracleAddress = '0x07D91f5fb9Bf7798734C3f606dB065549F6893bb';
diff --git a/src/services/health.service.ts b/src/services/health.service.ts
index 55eea33..6afdfe3 100644
--- a/src/services/health.service.ts
+++ b/src/services/health.service.ts
@@ -83,7 +83,7 @@ export class HealthService {
     await this.store.client.zadd('errors:code', 'INCR', 1, e?.code || 'RUNTIME_ERROR');
     await this.store.client.zadd('errors:log', 'INCR', 1, e.message);
 
-    if (e?.code === 'REVERTED') {
+    if (e?.code === 'REVERTED' || e?.code === 'SEND_ERROR') {
       const jobUrl = `${this.config.host}/v1/jobs/${jobId}`;
       await this.pushAlert({
         message: `${e.message} \n ${jobUrl}`,
@@ -108,7 +108,7 @@ export class HealthService {
     } else if (value.lt(this.config.balances[currency].warn)) {
       level = 'WARN';
     }
-    const msg = { WARN: 'Please refill your balance', CRITICAL: 'Insufficient balance' };
+    const msg = { WARN: 'Please refill your balance', CRITICAL: 'Insufficient balance', OK: 'ok' };
     const alert = {
       type: `${type}_${currency}_${level}`,
       message: `${msg[level]} ${formatEther(value)} ${currency === 'MAIN' ? this.config.nativeCurrency : 'torn'}`,