Template Error

Hi again… (sorry but I don’t speak english very well)
I think it has a issue
/home/xxx/public_html/wp-content/plugins/wp-invoice/core/ui/Invoice_page_wpi_page_reports.php

This file is called like uppercase… I edited the line 246 in wp-invoice/core/wpi_ui.php, I changed:
$file_path = apply_filters( 'wpi_page_loader_path', WPI_Path . "/core/ui/{$current_screen->base}.php", $current_screen->base, WPI_Path . "/core/ui/" );

with:

$file = strtolower($current_screen->base);
$file_path = apply_filters( 'wpi_page_loader_path', WPI_Path . "/core/ui/$file.php", $file, WPI_Path . "/core/ui/" );

And it seems work fine, now show a jquery error:
Uncaught TypeError: Object [object Object] has no method ‘tabs’
in wp-invoice/core/ui/invoice_page_wpi_page_settings.php line 64

There is a way to fix both errors. Thanks.