Hi I deleted the translation from /public_html/wp-content/languages/themes/ and I copied the translations to the following directory /public_html/staging/wp-content/themes/pro-child/lang and added the following code to the child functions.php and didn´t work.
load_child_theme_textdomain( ‘x’, get_stylesheet_directory() . ‘/lang’ );
Note: this is a staging site you can change whatever you need to make it work.