ubuntu16.04升级到20.04,seahub无法启动

LC_ALL is not set in ENV, set to en_US.UTF-8
Starting seahub (fastcgi) at 127.0.0.1:8000 …
Traceback (most recent call last):
File “/data/haplox_seafile/seafile-server-6.1.2/seahub/manage.py”, line 10, in
execute_from_command_line(sys.argv)
File “/data/haplox_seafile/seafile-server-6.1.2/seahub/thirdpart/Django-1.8.18-py2.7.egg/django/core/management/init.py”, line 354, in execute_from_command_line
utility.execute()
File “/data/haplox_seafile/seafile-server-6.1.2/seahub/thirdpart/Django-1.8.18-py2.7.egg/django/core/management/init.py”, line 328, in execute
django.setup()
File “/data/haplox_seafile/seafile-server-6.1.2/seahub/thirdpart/Django-1.8.18-py2.7.egg/django/init.py”, line 18, in setup
apps.populate(settings.INSTALLED_APPS)
File “/data/haplox_seafile/seafile-server-6.1.2/seahub/thirdpart/Django-1.8.18-py2.7.egg/django/apps/registry.py”, line 108, in populate
app_config.import_models(all_models)
File “/data/haplox_seafile/seafile-server-6.1.2/seahub/thirdpart/Django-1.8.18-py2.7.egg/django/apps/config.py”, line 198, in import_models
self.models_module = import_module(models_module_name)
File “/usr/lib/python2.7/importlib/init.py”, line 37, in import_module
import(name)
File “/data/haplox_seafile/seafile-server-6.1.2/seahub/seahub/avatar/models.py”, line 25, in
import Image
ImportError: No module named Image
Error:Seahub failed to start.