apport.log

ERROR: apport (pid 23850) Tue Sep  1 21:07:32 2015: Unhandled exception:
Traceback (most recent call last):
  File "/usr/share/apport/apport", line 54, in drop_privileges
    stat = os.stat('/proc/' + pid)
FileNotFoundError: [Errno 2] No such file or directory: '/proc/43'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/share/apport/apport", line 276, in <module>
    drop_privileges(pid, True)
  File "/usr/share/apport/apport", line 56, in drop_privileges
    raise ValueError('Invalid process ID: ' + str(e))
ValueError: Invalid process ID: [Errno 2] No such file or directory: '/proc/43'
ERROR: apport (pid 23850) Tue Sep  1 21:07:32 2015: pid: 23850, uid: 0, gid: 0, euid: 0, egid: 0
ERROR: apport (pid 23850) Tue Sep  1 21:07:32 2015: environment: environ({})
ERROR: apport (pid 24056) Tue Sep  1 21:09:29 2015: Unhandled exception:
Traceback (most recent call last):
  File "/usr/share/apport/apport", line 276, in <module>
    drop_privileges(pid, True)
  File "/usr/share/apport/apport", line 54, in drop_privileges
    stat = os.stat('/proc/' + pid)
TypeError: Can't convert 'int' object to str implicitly
ERROR: apport (pid 24056) Tue Sep  1 21:09:29 2015: pid: 24056, uid: 0, gid: 0, euid: 0, egid: 0
ERROR: apport (pid 24056) Tue Sep  1 21:09:29 2015: environment: environ({})