Error adding a File field or image field to the custom columns on the entries list.

[studionigh]

Description of the problem
I have a channel for Apps, and within the channel, I have a field for the apps logo. I thought it would be great to see the logo as part of the columns on the listing view of the entries. I have tried this on two different sites, and one has a warning but shows the URL to the image:

Notice
Undefined index: title
ee/ExpressionEngine/Addons/file/ft.file.php, line 1004

Severity: E_NOTICE
Warning
Cannot modify header information - headers already sent by (output started at ee/legacy/core/Exceptions.php:120)
ee/ExpressionEngine/Boot/boot.common.php, line 476

Severity: E_WARNING

And the other site shows an error, and now I am not able to see any entries in that channel:

Error Caught
Call to a member function toArray() on null
ee/legacy/libraries/File_field.php:619

Stack Trace: Please include when reporting this error
#0 ee/legacy/libraries/File_field.php(656): File_field->get_file('898')
#1 ee/ExpressionEngine/Addons/file/ft.file.php(262): File_field->parse_field('{file:898:url}')
#2 ee/ExpressionEngine/Addons/file/ft.file.php(1003): File_ft->pre_process('{file:898:url}')
#3 ee/ExpressionEngine/Model/Content/FieldFacade.php(462): File_ft->renderTableCell('{file:898:url}', 107, Object(ExpressionEngine\Addons\Pro\Model\Channel\ChannelEntry))
#4 ee/ExpressionEngine/Library/CP/EntryManager/Columns/CustomField.php(68): ExpressionEngine\Model\Content\FieldFacade->renderTableCell('{file:898:url}', 107, Object(ExpressionEngine\Addons\Pro\Model\Channel\ChannelEntry))
#5 ee/ExpressionEngine/Library/CP/EntryManager/ColumnRenderer.php(58): ExpressionEngine\Library\CP\EntryManager\Columns\CustomField->renderTableCell(NULL, NULL, Object(ExpressionEngine\Addons\Pro\Model\Channel\ChannelEntry), 'list', false)
#6 [internal function]: ExpressionEngine\Library\CP\EntryManager\ColumnRenderer->ExpressionEngine\Library\CP\EntryManager\{closure}(Object(ExpressionEngine\Library\CP\EntryManager\Columns\CustomField))
#7 ee/ExpressionEngine/Library/CP/EntryManager/ColumnRenderer.php(59): array_map(Object(Closure), Array)
#8 ee/ExpressionEngine/Controller/Publish/Edit.php(206): ExpressionEngine\Library\CP\EntryManager\ColumnRenderer->getRenderedTableRowForEntry(Object(ExpressionEngine\Addons\Pro\Model\Channel\ChannelEntry))
#9 [internal function]: ExpressionEngine\Controller\Publish\Edit->index()
#10 ee/ExpressionEngine/Core/Core.php(268): call_user_func_array(Array, Array)
#11 ee/ExpressionEngine/Core/Core.php(124): ExpressionEngine\Core\Core->runController(Array)
#12 ee/ExpressionEngine/Boot/boot.php(184): ExpressionEngine\Core\Core->run(Object(ExpressionEngine\Core\Request))
#13 admin.php(154): require_once('...')
#13 admin.php(154): require_once('...')

How To Reproduce
Steps to reproduce the behavior:

1. adding a file field or image

Screenshots / Videos / Template Code

Environment Details:

• Version: 7.1.2
• PHP Version 7.4.30
• MySQL Version 10.3.36-MariaDB
• OS: Mac
• Web Server: Apache Version | 2.4.54

Possible Solution

Additional context

[intoeetive]

@studionigh thank you for the report.

This seems to be related to the fact that at least in one entry the fields are pointing to the files that do not exist. The pull request referenced here will fix the issue