Fix inviting existing user to org

backend/src/controllers/v1/membershipOrgController.ts

@@ -115,13 +115,14 @@ export const inviteUserToOrganization = async (req: Request, res: Response) => {
 		if (!membershipOrg) {
 			throw new Error('Failed to validate organization membership');
 		}
-
+		
 		invitee = await User.findOne({
 			email: inviteeEmail
-		});
+		}).select('+publicKey');
 
 		if (invitee) {
 			// case: invitee is an existing user
+			
 			inviteeMembershipOrg = await MembershipOrg.findOne({
 				user: invitee._id,
 				organization: organizationId