Problem with gravity forms: Missing argument 3 for gf_apply_filters()

[awezoom]

Hi. I have a page that has been running with Gravity forms for a couple of years without issues. Now, yesterday I upgraded Wordpress, and now, when I try to download the Excel file, I get these errors:
Warning: Missing argument 3 for gf_apply_filters(), called in /homepages/33/d379022791/htdocs/clickandbuilds/infoclustering/wp-content/plugins/gf-entries-in-excel/src/Repository/FormsRepository.php on line 61 and defined in /homepages/33/d379022791/htdocs/clickandbuilds/infoclustering/wp-content/plugins/Gravityforms.v1.9.4.4/gravityforms.php on line 3131

This appears in the order by area.

But in the end of the page I get this error:
Fatal error: Call to protected method GFAddOn::get_plugin_settings() from context 'GFExcel\Repository\FieldsRepository' in /homepages/33/d379022791/htdocs/clickandbuilds/infoclustering/wp-content/plugins/gf-entries-in-excel/src/Repository/FieldsRepository.php on line 150

I've tried to disable, uninstall and reinstall the plugin, but still found no changes. Any help here? I don't know how to proceed.

Thanks in advance!

[awezoom]

Also, I forgot to mention that, when I try to download the excel results, I get this fullscreen message:

Fatal error: Call to protected method GFAddOn::get_plugin_setting() from context 'GFExcel\Repository\FormsRepository' in /homepages/33/d379022791/htdocs/clickandbuilds/infoclustering/wp-content/plugins/gf-entries-in-excel/src/Repository/FormsRepository.php on line 31
Gravity Forms Entries in Excel: Whoops, unfortunately something is broken.

Error message: Call to protected method GFAddOn::get_plugin_setting() from context 'GFExcel\Repository\FormsRepository'

If you need support for this, please contact me via the support forum on the wordpress plugin.

Check if someone else had the same error, before posting a new support question.
And when opening a new question, please use the error message (Call to protected method GFAddOn::get_plugin_setting() from context 'GFExcel\Repository\FormsRepository') as the title,
and include the following details in your message:

Plugin Version: 1.5.3
PHP Version: 5.6.38
Wordpress Version: 4.9.8
Error message: Call to protected method GFAddOn::get_plugin_setting() from context 'GFExcel\Repository\FormsRepository'
Error stack trace:

#0 [internal function]: GFExcel\Renderer\AbstractPHPExcelRenderer->fatal_handler()
#1 {main}

[Reüel van der Steege]

This repository is a Gravity Forms extension for the Pronamic Pay payment plugin and unrelated to the Gravity Forms Entries in Excel plugin that you seem to be using. Please see the plugin support forum at https://wordpress.org/support/plugin/gf-entries-in-excel for support.