two errors when installing on J5 (without compat)

[joomod]

I know this release is not official for J5, but beside "my" errors it is running good

Steps to reproduce the issue

installed the package on v5.1. (without compat plugin)
to use with a PM system, where full indexing for each user would not be useful

Expected result

• no errors, or only notices.

Actual result

class errors on
administrator/tmpl/searches/default.php line 60 (\JFilterOutput)
components/com_search/src/Controller/DisplayController.php line 82 (\JFilterInput)

so just replaced:
\JFilterOutput -> \Joomla\CMS\Filter\OutputFilter
\JFilterInput -> \Joomla\CMS\Filter\InputFilter

System information (as much as possible)

Additional comments