Generic error when attempting to view a private Person Report

[jefft]

Under Persons -> Reports one has the choice of setting a report's Visibility to "everyone" or "only to me".

If a "Visible only to me" report URL is inadvertently shared and clicked by someone else, the viewer gets a generic "An error occurred. Please contact your system administrator for help. " error, and a stacktrace is generated:

Cannot load report that belongs to another user!
Line 1748 of /srv/www/jethro/2.30.5/db_objects/person_query.class.php

USER:       1
REFERER:    https://jethro.example.com/?view=persons__reports&queryid=568
USER_AGENT: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.2 Safari/605.1.15

REQUEST:
Array
(
    [view] => persons__reports
    [queryid] => 568
    [_sizeDetector] => Array
        (
            [width] => 2430
            [height] => 1221
        )

    [username] => jbloggs
    [login_key] => xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
)


BACKTRACE:
Array
(
    [0] => Array
        (
            [file] => /srv/www/jethro/2.30.5/db_objects/person_query.class.php
            [line] => 1748
            [function] => trigger_error
            [args] => Array
                (
                    [0] => Cannot load report that belongs to another user!
                    [1] => 256
                )

        )

    [1] => Array
        (
            [file] => /srv/www/jethro/2.30.5/include/db_object.class.php
            [line] => 44
            [function] => load
            [class] => Person_Query
            [type] => ->
            [args] => Array
                (
                    [0] => 568
                )

        )

    [2] => Array
        (
            [file] => /srv/www/jethro/2.30.5/db_objects/person_query.class.php
            [line] => 61
            [function] => __construct
            [class] => db_object
            [type] => ->
            [args] => Array
                (
                    [0] => 568
                )

        )

    [3] => Array
        (
            [file] => /srv/www/jethro/2.30.5/views/view_3_persons__3_reports.class.php
            [line] => 16
            [function] => __construct
            [class] => Person_Query
            [type] => ->
            [args] => Array
                (
                    [0] => 568
                )

        )

    [4] => Array
        (
            [file] => /srv/www/jethro/2.30.5/include/system_controller.class.php
            [line] => 130
            [function] => processView
            [class] => View_Persons__Reports
            [type] => ->
            [args] => Array
                (
                )

        )

    [5] => Array
        (
            [file] => /srv/www/jethro/2.30.5/index.php
            [line] => 58
            [function] => run
            [class] => System_Controller
            [type] => ->
            [args] => Array
                (
                )

        )

)

It would be nice if the actual error message could be fished out and presented to the user.