Front desk Client Historic

Hello,
Would it be possible in the front desk also to have the phone number a possibility for searching the client I want to see the historic.
My clients aren't regestered users nor the email is a mandatory field only the name and the phone is.

I've attached pictures for you to see what I mean.

Thank you
Maria

Print this page not workign. Open new window with text: Error

No any log in Log screen.

All url /component/rsappt_pro3/front_desk/customer_history/front_desk/839?filter_user=527&startdateFilter=2019-01-18&enddateFilter=&statusFilter=&user_email=&filter_order=startdatetime&filter_order_Dir=asc&format=prt&Itemid=839

After On Error show on Joomla - I see Error: Call to undefined method Joomla\CMS\Document\RawDocument::addFavicon(): Too few arguments to function JHtmlGrid::sort(), 1 passed and at least 2 expected

With filter or whithout the same error

When I click on button Print this page - I have new window with this error - and no information to print!

For me as super administrator
And for Administrator of resource.
Other users can't have access for this page.

I an tested with registered request user and without registerd user booking request. Error is the same.

this is not a Joomla bug,

the problem is that some extensions will ask the error page to be created while format is not HTML, by throwing an exception, i am not sure if this appropriate behaviour, but the error.php of some templates is not checking the current format, to see how your template is (or not) handling this case, just test this:

get any invalid URL of your website
add to it to ?format=raw or (&format=raw) ... or ?format=json or ?format=xml
see if you get fatal error
to fix this, and at the same time you have 2 options either exit and output nothing or print some short message like (add at the top of your template's error.php):

(--ADD the code after the check if $this->error isset)

$_format = JFactory::getApplication()->input->get('format', 'html');
if ($_format!='html') { // catch ALL non html formats, or maybe output special e.g. if xml output XML ??
die(
'Exception with ERROR code:'.$this->error->getCode()
.' Thrown by --"'.$_format.'"-- format URL: '. JURI::current()
.' Error: '.$this->error->getMessage()
);
}

After that i have info:

Exception with ERROR code:0 Thrown by --"prt"-- format URL: www.mydomen.com/ua/component/rsappt_pro3...story/front_desk/839 Error: Too few arguments to function JHtmlGrid::sort(), 1 passed and at least 2 expected

yes for all user.
When I replace in url "&format=prt" to &tmpl=component it working but show page to print with select user form only.