get_extra_user_fields() has been removed (Moodle 4.3.3)

[lcassisi]

Stopped working. Got this error:

Detectado un error de codificación, debe ser corregido por un programador: get_extra_user_fields() has been removed. Please use the \core_user\fields API instead.

[mike-d-howell]

Piling on :)

Moodle 4.3.3, mod_certificate build 2016061700 while trying to view a certificate, with debugging turned on:

Stack trace:
line 2774 of /lib/deprecatedlib.php: coding_exception thrown
line 451 of /mod/certificate/locallib.php: call to get_extra_user_fields()
line 106 of /mod/certificate/view.php: call to certificate_get_issues()

EDIT
I modified /mod/certificate/locallib.php following stupidchief's recommendation. I commented out line 451 and added chief's code, and it worked.

Additionally, we saw the same error message with /mod/certificate/report.php. I found a Moodle dev page (https://docs.moodle.org/dev/User_fields) that recommends what to edit, and I made a similar changes:

/mod/certificate/report.php: Comment out line 108 and add:

// Get extra fields to show the user.
// $extrafields = get_extra_user_fields($context);
$extrafields = \core_user\fields::for_identity($context, false)->get_required_fields();

/mod/certificate/report.php: Comment out line 274 and add:

$table->align = array('left');
foreach ($extrafields as $field) {
//    $table->head[] = get_user_field_name($field);
    $table->head[] = \core_user\fields::get_display_name($field);
    $table->align[] = 'left';
}

This seems to work, although I'm not familiar enough with Moodle code to say if all invalid codepaths have been exorcised!

[stupidchief]

line 451 of /mod/certificate/locallib.php: call to get_extra_user_fields()

I don't know much about moodle so this could be dumb but it worked for me.
I changed the above line to this:

$picturefields = \core_user\fields::for_userpic()->get_required_fields();
$picturefields = preg_filter('/^/', 'u.', $picturefields);
$picturefields = implode(', ', $picturefields);

[onclick-mark]

Hi - thanks for thew advice above. This has fixed the original issues I was seeing but now when I go to generate a new certificate, I get the below error:

Exception - core_user::get_fullname(): Argument #1 ($user) must be of type stdClass, string given, called in [dirroot]/lib/moodlelib.php on line 3636

Any advice would be massively appreciated. Thanks

[Esheads]

Hello everyone.
I have Moodle 4.4.1 and have the same issue. (mod_certificate version: 2020082500 that I have downloaded from here)
While the above methods fixed the original issue (I am truly thankful for that)
I have this now (debugging on - developer mode)

*Edit: It seems that when removing developer mode debugging the certificates are working correctly (correct name-course and grade). Are the above warnings anything serious?