Problem with cron and file_put_contents

Hi
i have problem with code in my plugin. I have function with rand number and add to counter. I want to run it every day in Cron. If I run it manually in Cron manager thats all works fine, but if cron running this code i have problem becouse working only code rand number and add to old counter and save (update_option) but cod with open json file and change counter value and save this file on server dosn’t work :/

This is fragment cron and my function.

register_activation_hook(__FILE__, 'my_activation');
register_deactivation_hook(__FILE__, 'my_deactivation'); // Zaczep do funkcji wyłączajacej crone
 
function my_activation() {
    if (! wp_next_scheduled ( 'makitech_dzienny_licznik_hook2' )) {
    wp_schedule_event(time(), 'daily', 'makitech_dzienny_licznik_hook2');
    }
}
 
add_action('makitech_dzienny_licznik_hook2', 'do_this_hourly');
 
function do_this_hourly() {
    losuj_dzienny_licznik2();
}		
		function my_deactivation() {
			wp_clear_scheduled_hook('makitech_dzienny_licznik_hook2');

		}		



function losuj_dzienny_licznik2 () {
	
	$options = get_option( 'boj_myplugin_options' );
	$licznik = $options['text_string'];
	$min = $options['min_val'];
	$max = $options['max_val'];
	
	
	$nowa_wartosc = $licznik+ rand($min,$max);
	$options['text_string'] = $nowa_wartosc;
	
	$path = get_home_path() ;
	
	$strJsonFileContents = file_get_contents($path."licznik.json");
	
    $data = json_decode($strJsonFileContents, true);
	
	$data['licznik'] = "{$nowa_wartosc}";
	
	$newJsonString = json_encode($data);
    file_put_contents($path."licznik.json", $newJsonString);
	
	
	 update_option('boj_myplugin_options', $options);
	 

}