Pre-transform error: Failed to resolve import "#mailer" from "server/services/email.ts". Does the file exist?

[loicmaes]

Environment

Node : 21.6.0
Pnpm: 9.9.0
Nuxt: 3.13
Nuxt-Mailer: Latest

Problem

import { useMailer } from "#mailer";
import type { EmailRequest } from "~/types/email";

export async function sendEmail(request: EmailRequest) {
  const config = useRuntimeConfig();
  const mailService = useMailer();
  const transporter = mailService.customTransporter({
    auth: {
      user: config.mailerUser,
      pass: config.mailerPass,
    },
    secure: true,
    host: config.mailerHost,
    port: parseInt(config.mailerPort),
  });

  return await mailService.sendMail({
    requestId: "test-key",
    options: {
      fromEmail: config.mailerFromAddress,
      fromName: config.mailerFromName,
      to: request.to,
      subject: request.to,
      html: request.template.html ?? "",
      text: request.template.text,
    },
    transporter,
  });
}

Error:

Pre-transform error: Failed to resolve import "#mailer" from "server/services/email.ts". Does the file exist?

Can you help me to solve the problem?