My lubunutu is installed in a virtual machine. Whenever I try to open the file manager from taskbar icon nothing happens. If I try to open the file manager from desktop options I get this message
Failed to execute child process "lxsession-default" (No such file or directory)
BTW my desktop options also changed. Previously clicking right mouse button would let me access options such as change background etc. now they are missing and replaced with open file manager, multimedia etc. My desktop background is now blank.