I downloaded sentinel data using qgis from copernicus. And I installed version 2.9 sen2cor. When I input MTD_TL.xml, I got a message which is "java.lang.illegalStateException: The naming convention structure is invalid for input file 'C:\Downloads\L1C_T52SBB_A002288_20151130T022422_2015-11-30\MTD_TL.xml.
And I entered the other xml file. I got a message which is xml could not be read.
I want to make L2A files.
Is the way I download the files wrong? How can I make L2A?