TypeError: Cannot access offset of type string on string in /home/sites/web1748/web/application/model/casestudies.php:185
Stack trace:
#0 /home/sites/web1748/web/application/scripts/casestudies.php(38): Model_CaseStudies->fetchCategoriesUnder()
#1 /home/sites/web1748/web/application/scripts/casestudies.php(14): Glassbox_Script_CaseStudies->listByCategoryAction()
#2 /usr/local/share/glassbox/4.93/Glassbox/Script.php(59): Glassbox_Script_CaseStudies->indexAction()
#3 /usr/local/share/glassbox/4.93/Glassbox/PageRenderer.php(484): Glassbox_Script->dispatch()
#4 /usr/local/share/glassbox/4.93/php/libmarkerparser.php(234): Glassbox_PageRenderer->script_marker()
#5 /usr/local/share/glassbox/4.93/php/libmarkerparser.php(155): MarkerParser->callback()
#6 /usr/local/share/glassbox/4.93/Glassbox/PageRenderer.php(249): MarkerParser->marker_callback()
#7 /usr/local/share/glassbox/4.93/application/modules/render.php(272): Glassbox_PageRenderer->render_dynamic_content()
#8 /usr/local/share/glassbox/4.93/application/modules/render.php(94): render->html()
#9 /usr/local/share/glassbox/4.93/application/modules/render.php(71): render->show()
#10 /usr/local/share/glassbox/4.93/Glassbox.php(150): render->display()
#11 /home/sites/web1748/web/index.php(25): Glassbox->module_render()
#12 {main}

TypeError Object
(
    [message:protected] => Cannot access offset of type string on string
    [string:Error:private] => TypeError: Cannot access offset of type string on string in /home/sites/web1748/web/application/model/casestudies.php:185
Stack trace:
#0 /home/sites/web1748/web/application/scripts/casestudies.php(38): Model_CaseStudies->fetchCategoriesUnder()
#1 /home/sites/web1748/web/application/scripts/casestudies.php(14): Glassbox_Script_CaseStudies->listByCategoryAction()
#2 /usr/local/share/glassbox/4.93/Glassbox/Script.php(59): Glassbox_Script_CaseStudies->indexAction()
#3 /usr/local/share/glassbox/4.93/Glassbox/PageRenderer.php(484): Glassbox_Script->dispatch()
#4 /usr/local/share/glassbox/4.93/php/libmarkerparser.php(234): Glassbox_PageRenderer->script_marker()
#5 /usr/local/share/glassbox/4.93/php/libmarkerparser.php(155): MarkerParser->callback()
#6 /usr/local/share/glassbox/4.93/Glassbox/PageRenderer.php(249): MarkerParser->marker_callback()
#7 /usr/local/share/glassbox/4.93/application/modules/render.php(272): Glassbox_PageRenderer->render_dynamic_content()
#8 /usr/local/share/glassbox/4.93/application/modules/render.php(94): render->html()
#9 /usr/local/share/glassbox/4.93/application/modules/render.php(71): render->show()
#10 /usr/local/share/glassbox/4.93/Glassbox.php(150): render->display()
#11 /home/sites/web1748/web/index.php(25): Glassbox->module_render()
#12 {main}
    [code:protected] => 0
    [file:protected] => /home/sites/web1748/web/application/model/casestudies.php
    [line:protected] => 185
    [trace:Error:private] => Array
        (
            [0] => Array
                (
                    [file] => /home/sites/web1748/web/application/scripts/casestudies.php
                    [line] => 38
                    [function] => fetchCategoriesUnder
                    [class] => Model_CaseStudies
                    [type] => ->
                )

            [1] => Array
                (
                    [file] => /home/sites/web1748/web/application/scripts/casestudies.php
                    [line] => 14
                    [function] => listByCategoryAction
                    [class] => Glassbox_Script_CaseStudies
                    [type] => ->
                )

            [2] => Array
                (
                    [file] => /usr/local/share/glassbox/4.93/Glassbox/Script.php
                    [line] => 59
                    [function] => indexAction
                    [class] => Glassbox_Script_CaseStudies
                    [type] => ->
                )

            [3] => Array
                (
                    [file] => /usr/local/share/glassbox/4.93/Glassbox/PageRenderer.php
                    [line] => 484
                    [function] => dispatch
                    [class] => Glassbox_Script
                    [type] => ->
                )

            [4] => Array
                (
                    [file] => /usr/local/share/glassbox/4.93/php/libmarkerparser.php
                    [line] => 234
                    [function] => script_marker
                    [class] => Glassbox_PageRenderer
                    [type] => ->
                )

            [5] => Array
                (
                    [file] => /usr/local/share/glassbox/4.93/php/libmarkerparser.php
                    [line] => 155
                    [function] => callback
                    [class] => MarkerParser
                    [type] => ->
                )

            [6] => Array
                (
                    [file] => /usr/local/share/glassbox/4.93/Glassbox/PageRenderer.php
                    [line] => 249
                    [function] => marker_callback
                    [class] => MarkerParser
                    [type] => ->
                )

            [7] => Array
                (
                    [file] => /usr/local/share/glassbox/4.93/application/modules/render.php
                    [line] => 272
                    [function] => render_dynamic_content
                    [class] => Glassbox_PageRenderer
                    [type] => ->
                )

            [8] => Array
                (
                    [file] => /usr/local/share/glassbox/4.93/application/modules/render.php
                    [line] => 94
                    [function] => html
                    [class] => render
                    [type] => ->
                )

            [9] => Array
                (
                    [file] => /usr/local/share/glassbox/4.93/application/modules/render.php
                    [line] => 71
                    [function] => show
                    [class] => render
                    [type] => ->
                )

            [10] => Array
                (
                    [file] => /usr/local/share/glassbox/4.93/Glassbox.php
                    [line] => 150
                    [function] => display
                    [class] => render
                    [type] => ->
                )

            [11] => Array
                (
                    [file] => /home/sites/web1748/web/index.php
                    [line] => 25
                    [function] => module_render
                    [class] => Glassbox
                    [type] => ->
                )

        )

    [previous:Error:private] => 
)