Can't add CC to send email function

  recipientEmail: string,
  subject: string,
  content: string,
  appointmentSchedule: Date
) => {
  try {
    const scheduledTime = new Date(appointmentSchedule).toISOString();

    console.log(ID.unique());
    // console.log(ccEmails);
    console.log(recipientEmail);

    const message = await messaging.createEmail(
      ID.unique(), // Unique message ID
      subject, // Subject of the email
      content, // Content of the email
      [], // Topics (optional)
      [recipientEmail], // List of user emails (you can include more)
      [], // Targets (optional)
      ["example@mail.com"], // CC (optional)
      [], // BCC (optional)
      [], // Attachments (optional)
      false, // Draft (optional)
      true, // HTML content
      scheduledTime
    );

    return parseStringify(message);
  } catch (error) {
    console.error("An error occurred while sending email:", error);
  }
};```

  type: 'general_argument_invalid',
  response: {
    message: "Invalid `bcc` param: Value must a valid array and UID must contain at most 36 chars. Valid chars are a-z, A-Z, 0-9, and underscore. Can't start with a leading underscore",
    code: 400,
    type: 'general_argument_invalid',
    version: '1.6.0'
  }```

```code: 400,
  type: 'message_target_not_email',
  response: {
    message: 'Message with the target ID is not an email target.',
    code: 400,
    type: 'message_target_not_email',
    version: '1.6.0'
  }```