Make sure that errors are displayed as string in logger in order to avoid more error

package.json

 {
   "name": "service-email",
-  "version": "1.2.1",
+  "version": "1.2.2",
   "description": "description",
   "author": "",
   "license": "MIT",

src/email/email.service.ts

@@ -106,14 +106,14 @@ export class EmailService {
     const transporter = Nodemailer.createTransport(this.config.smtpConfig);
 
     await transporter.verify().catch((error) => {
-      this.logger.error('SMTP connection failed.', error, `${EmailService.name} - ${this.send.name}`);
+      this.logger.error('SMTP connection failed.', `${error}`, `${EmailService.name} - ${this.send.name}`);
       throw new InternalServerErrorException({ error, message: 'SMTP connection failed.' });
     });
 
     this.logger.log('SMTP Server is ready to receive messages', `${EmailService.name} - ${this.send.name}`);
 
     await transporter.sendMail(email).catch((error) => {
-      this.logger.error('Couldn\'t send email.', error, `${EmailService.name} - ${this.send.name}`);
+      this.logger.error('Couldn\'t send email.', `${error}`, `${EmailService.name} - ${this.send.name}`);
       transporter.close();
       throw new InternalServerErrorException({ error, message: 'Couldn\'t send email.' });
     });

src/health/smtp.healthIndicator.ts

@@ -22,7 +22,7 @@ export class SmtpHealthIndicator extends HealthIndicator {
     const transporter = Nodemailer.createTransport(this.configService.config.smtpConfig);
 
     await transporter.verify().catch((error) => {
-      this.logger.error('SMTP connection failed.', error, `${SmtpHealthIndicator.name} - ${this.checkSMTPConnection.name}`);
+      this.logger.error('SMTP connection failed.', `${error}`, `${SmtpHealthIndicator.name} - ${this.checkSMTPConnection.name}`);
       transporter.close();
       throw new HealthCheckError('SMTP connection failed', error);
     });