Warning: fopen(myputfile.ext): Failed to open stream: Read-only file system in /app/test-files/files_for_manual/upload/put.php on line 6

Fatal error: Uncaught TypeError: fclose(): Argument #1 ($stream) must be of type resource, false given in /app/test-files/files_for_manual/upload/put.php:14 Stack trace: #0 /app/test-files/files_for_manual/upload/put.php(14): fclose(false) #1 {main} thrown in /app/test-files/files_for_manual/upload/put.php on line 14