fix: add ob_clean and flush

src/classes/class-tainacan-background-process.php

@@ -454,6 +454,8 @@ abstract class Background_Process extends \Tainacan_WP_Background_Process {
 		
 		$filepath = $logs_folder . '/' . $filename;
 		
+		\ob_clean();
+		\flush();
 		file_put_contents($filepath, $this->recursive_stingify_log_array($log), FILE_APPEND);
 		
 		//$fh = fopen($filepath, 'a');

src/classes/class-tainacan-private-files.php

@@ -244,6 +244,8 @@ class Private_Files {
 					// header('Cache-Control: must-revalidate');
 					// header('Pragma: public');
 					// header('Content-Length: ' . filesize($file));
+					\ob_clean();
+					\flush();
 					\readfile($existing_file);
 
 					die;