我试图在Ubuntu 16.04系统中安装软件，但突然我开始出现以下错误。现在，即使我尝试运行常见的终端命令，例如lsb_release -a，我也经常收到此错误。
Traceback (most recent call last):
File "/usr/bin/software-properties-gtk", line 33, in <module>
from aptsources.sourceslist import SourcesList
File "/usr/lib/python3/dist-packages/aptsources/sourceslist.py", line 29, in <module>
import logging
File "/usr/lib/python3.5/logging/__init__.py", line 26, in <module>
import sys, os, time, io, traceback, warnings, weakref, collections
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 661, in exec_module
File "<frozen importlib._bootstrap_external>", line 766, in get_code
File "<frozen importlib._bootstrap_external>", line 819, in get_data
MemoryError
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 63, in apport_excepthook
from apport.fileutils import likely_packaged, get_recent_crashes
File "/usr/lib/python3/dist-packages/apport/__init__.py", line 5, in <module>
from apport.report import Report
File "/usr/lib/python3/dist-packages/apport/report.py", line 12, in <module>
import subprocess, tempfile, os.path, re, pwd, grp, os, time
File "/usr/lib/python3.5/subprocess.py", line 366, in <module>
import warnings
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 661, in exec_module
File "<frozen importlib._bootstrap_external>", line 766, in get_code
File "<frozen importlib._bootstrap_external>", line 819, in get_data
MemoryError
Original exception was:
Traceback (most recent call last):
File "/usr/bin/software-properties-gtk", line 33, in <module>
from aptsources.sourceslist import SourcesList
File "/usr/lib/python3/dist-packages/aptsources/sourceslist.py", line 29, in <module>
import logging
File "/usr/lib/python3.5/logging/__init__.py", line 26, in <module>
import sys, os, time, io, traceback, warnings, weakref, collections
File "<frozen importlib._bootstrap>", line 969, in _find_and_load
File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 661, in exec_module
File "<frozen importlib._bootstrap_external>", line 766, in get_code
File "<frozen importlib._bootstrap_external>", line 819, in get_data
MemoryError