/usr/sbin/xrdp-sesman:11:__execvpe_common:__execvpe:__GI_execvp:g_execvp:session_start_fork

The Ubuntu Error Tracker has been receiving reports about a problem regarding xrdp. This problem was most recently seen with package version 0.9.8-2, the problem page at https://errors.ubuntu.com/problem/09e8469e17132275af278984e506530aa2ca3e7a contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.