@AuraEnable Server side controller not executing properly (not showing debug log)

I have this component that is available from a Community, where an object gets populated and passed to Apex controller in a JSON String. From the server side, it should show via debug what I ask, but nothing happens.

Component markup:

<aura:attribute name="contactInfo" type="Contact"
                default="{
                'Id': '',
                'MailingStreet': '', 'MailingCity': '',
                'MailingState': '', 'MailingPostalCode': '',
                'MailingCountry': 'US', 'MobilePhone': '',
                'Secondary_Email__c': '',
                'Birthdate': '',
                --- ETC ---
                "/>

Component controller.js:

updateContactInfo : function(component, event, helper) {
    var cId = component.get("v.contactId"); // Updated from the doInit method
    component.set("v.contactInfo.Id",cId);
    // console.log(cId);
    var contact = component.get("v.contactInfo");
    // console.log('Contact: ' + JSON.stringify(contact));
    var action = component.get("c.updateContact");
    action.setParams({
        jsonContact : JSON.stringify(contact)
    });
    var self = this;
    // console.log('Params ' + JSON.stringify(action.getParams()));
    action.setCallback(this, function(response){
        var state = response.getState();
        if(state === "SUCCESS") {
            console.log(response.getReturnValue());
        } else {
            console.error(JSON.stringify(response.getError()));
        }
    });
    $A.enqueueAction(action);
}

Server-side Apex controller:

@AuraEnabled
public static String updateContact(String jsonContact) {
    System.debug(jsonContact);
    if (!String.isBlank(jsonContact)) {
        try {
            Contact con = (Contact) JSON.deserialize(jsonContact, Contact.class);
            System.debug('Contact from Client Controller: ' + con);
            if (con != null) {
                try {
                    update con;
                    System.debug(con.Birthdate);
                } catch (DmlException e) {
                    System.debug('Exception' + e.getMessage());
                }
            }
        } catch (Exception e) {
            System.debug('Exception' + e.getMessage());
            throw new AuraHandledException('There was an error in the Operation: ' + e.getMessage());
        }
    }
    return 'Ok';
}

This is the console log:

And here is where I should see the debug log from the Apex controller but I see nothing.

So, is returning me the 'Ok' String, that means that is accessing the controller method, but what's wrong here? Why I don't see the debugs? Furthermore, why is not executing what is inside the method?

Background:

I'm logged into the community from a Community User with Custom Profile (Apex permission on all classes). The information that I'm trying to edit belongs to that User's contact record (permissions to CRUD on objects) which I have already tested in order to edit a record (does works), so permission should not be the issue I believe (not 100% sure).

I don't know where else to look to troubleshoot this, so thanks in advance for your help.