No webgui + no update + python error

Just managed to move my install to a usb stick, as it was on an ssd. I had to fiddle a little with the partitions but now it is done. BUT...

I think that now the ram might be an issue. I have only 2gb of ram, and it was working fine on the ssd, but it is very sluggish on the usb stick. am not being able to login on the web interface, it says connection refused or bad gateway.

I used gnome previously on the system, so I am trying to unninstall it, the ony way I am being able to comunicate with the system is via putty. All the shares are working, user permissions, transmission...

Su, i ran the apt-get update and I got this errors.

File "/usr/sbin/omv-mkaptidx", line 91, in <module>
cache = apt.cache.Cache()
File "/usr/lib/python3/dist-packages/apt/cache.py", line 113, in __init__
self.open(progress)
File "/usr/lib/python3/dist-packages/apt/cache.py", line 164, in open
self._cache = apt_pkg.Cache(progress)
apt_pkg.Error: E:Problem parsing dependency 20, E:Error occurred while processing libgconf2-4 (NewVersion2), E:Problem with MergeList /var/lib/apt/lists/ftp.br.debian.org_debian_dists_stretch_main_binary-amd64_Packages, E:The package lists or status file could not be parsed or opened.
Lendo listas de pacotes... Erro!
E: Problem parsing dependency 20
E: Ocorreu um erro ao processar libgconf2-4 (NewVersion2)
E: Problem with MergeList /var/lib/apt/lists/ftp.br.debian.org_debian_dists_stretch_main_binary-amd64_Packages
E: The package lista or files could not be analised or open (As listas de pacotes ou os arquivos de estado não puderam ser analisados ou abertos.)
root@tristana:~# apt-get upgrade
Lendo listas de pacotes... Erro!
E: Problem parsing dependency 20
E: Ocorreu um erro ao processar libgconf2-4 (NewVersion2)
E: Problem with MergeList /var/lib/apt/lists/ftp.br.debian.org_debian_dists_stretch_main_binary-amd64_Packages
E: As listas de pacotes ou os arquivos de estado não puderam ser analisados ou abertos.

What should I do?

PS: I am going to buy more ram tomorrow to see if this fix the issue.
PS2: I managed to see the login briefly, but as soon as the services startup, it crashes.

Ideas?

The USB stick is Brand New sandisk. 16gb.

omv-aptclean gives me this:

[[AException ignored in: <function WeakValueDictionary.__init__.<locals>.remove at 0x7f181e0757b8>
Traceback (most recent call last):
File "/usr/lib/python3.5/weakref.py", line 117, in remove
TypeError: 'NoneType' object is not callable
Exception ignored in: <function WeakValueDictionary.__init__.<locals>.remove at 0x7f181e0757b8>
Traceback (most recent call last):
File "/usr/lib/python3.5/weakref.py", line 117, in remove
TypeError: 'NoneType' object is not callable
Reading package lists... Done

8. Saving current package list...

The rest if fine. I am able to login in the web interface.

As soon as I login, I get this:

Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C.UTF-8; dpkg-query -W -f='${Version}' openmediavault 2>&1' with exit code '2': dpkg-query: erro: a interpretar o ficheiro '/var/lib/dpkg/status' perto da linha 22428 pacote 'libfreerdp-codec1.1:amd64': campo 'Depends', referência a 'libwinpr-registry0.1': versão contém ' '

Some of it is in Portuguese.

The system still usable as normal apart from that. Going to run apt-get update and upgrade, or should I wait to solvethis new error?