I need to make sure that the all editors are removed, then set the owner and myself as the editors that can change restricted ranges and sheets, but I keepgetting the following error:
Exception: You can't remove yourself as an editor.
Here is a piece of the code I am using:

const p = templateContentWbSht.getProtections(SpreadsheetApp.ProtectionType.SHEET)[0];


let p2 = newContentWbSht.protect();
p2.setDescription(p.getDescription());
p2.setWarningOnly(p.isWarningOnly());

if (!p.isWarningOnly()) {
  const myEmail = Session.getEffectiveUser().getEmail();

  const ownerEmail = projectWbFile.getOwner().getEmail();
  console.log("My Email: " + myEmail);
  console.log("Owner Email: " + ownerEmail);

  const editors = projectWbFile.getEditors();
  editors.forEach(e => {
    return e.getEmail != myEmail;
  })
  editors.forEach(e => {
    console.log("Emails to remove: " + e.getEmail());
  })

  const editorsToKeep = editors.filter(editor => {
    return editor.getEmail() != myEmail && editor.getEmail() != ownerEmail;
  });

  editorsToKeep.forEach(e => {
    console.log("Emails to keep: " + e.getEmail());
  })

  p2.removeEditors(editors); //Exception: You can't remove yourself as an editor.
  p2.addEditors(editorsToKeep);
}

I am not sure if this would be the best approach, though, and would appreciate any light shed.