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When I execute sudo apt-get update in Terminal, this error message appears. Can anyone help me?

Get:1 file:/var/cuda-repo-8-0-rc  InRelease

Ign:1 file:/var/cuda-repo-8-0-rc  InRelease

Get:2 file:/var/cuda-repo-8-0-rc  Release

Ign:2 file:/var/cuda-repo-8-0-rc  Release

Get:3 file:/var/cuda-repo-8-0-rc  Packages

Ign:3 file:/var/cuda-repo-8-0-rc  Packages

Get:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Ign:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Get:5 file:/var/cuda-repo-8-0-rc  Translation-en

Ign:5 file:/var/cuda-repo-8-0-rc  Translation-en

Get:3 file:/var/cuda-repo-8-0-rc  Packages

Ign:3 file:/var/cuda-repo-8-0-rc  Packages

Get:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Ign:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Get:5 file:/var/cuda-repo-8-0-rc  Translation-en

Ign:5 file:/var/cuda-repo-8-0-rc  Translation-en

Get:3 file:/var/cuda-repo-8-0-rc  Packages

Ign:3 file:/var/cuda-repo-8-0-rc  Packages

Get:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Ign:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Get:5 file:/var/cuda-repo-8-0-rc  Translation-en

Ign:5 file:/var/cuda-repo-8-0-rc  Translation-en

Get:3 file:/var/cuda-repo-8-0-rc  Packages

Ign:3 file:/var/cuda-repo-8-0-rc  Packages

Get:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Ign:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Get:5 file:/var/cuda-repo-8-0-rc  Translation-en

Ign:5 file:/var/cuda-repo-8-0-rc  Translation-en

Get:3 file:/var/cuda-repo-8-0-rc  Packages

Ign:3 file:/var/cuda-repo-8-0-rc  Packages

Get:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Ign:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Get:5 file:/var/cuda-repo-8-0-rc  Translation-en

Ign:5 file:/var/cuda-repo-8-0-rc  Translation-en

Get:3 file:/var/cuda-repo-8-0-rc  Packages

Err:3 file:/var/cuda-repo-8-0-rc  Packages

  File not found - /var/cuda-repo-8-0-rc/Packages (2: No such file or directory)

Get:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Ign:4 file:/var/cuda-repo-8-0-rc  Translation-en_US

Get:6 http://security.ubuntu.com/ubuntu xenial-security InRelease [94.5 kB]                                                                                                                        

Hit:7 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu xenial InRelease                          

Hit:8 http://cn.archive.ubuntu.com/ubuntu xenial InRelease                                                 

Hit:9 http://storage.googleapis.com/bazel-apt stable InRelease                                            

Hit:11 http://cn.archive.ubuntu.com/ubuntu xenial-updates InRelease                  

Get:10 https://apt.dockerproject.org/repo ubuntu-xenial InRelease [20.6 kB]           

Hit:12 http://cn.archive.ubuntu.com/ubuntu xenial-backports InRelease                   

Get:13 https://apt.dockerproject.org/repo ubuntu-xenial/main amd64 Packages [1,719 B]

Hit:14 https://apt.dockerproject.org/repo ubuntu-xenial/main i386 Packages

Ign:14 https://apt.dockerproject.org/repo ubuntu-xenial/main i386 Packages

Hit:14 https://apt.dockerproject.org/repo ubuntu-xenial/main i386 Packages

Ign:14 https://apt.dockerproject.org/repo ubuntu-xenial/main i386 Packages

Hit:14 https://apt.dockerproject.org/repo ubuntu-xenial/main i386 Packages

Err:14 https://apt.dockerproject.org/repo ubuntu-xenial/main i386 Packages

  Empty files can't be valid archives

Fetched 117 kB in 3s (36.8 kB/s)

Reading package lists... Done

W: The repository 'file:/var/cuda-repo-8-0-rc  Release' does not have a Release file.

N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.

N: See apt-secure(8) manpage for repository creation and user configuration details.

W: http://storage.googleapis.com/bazel-apt/dists/stable/InRelease: Signature by key 71A1D0EFCFEB6281FD0437C93D5919B448457EE0 uses weak digest algorithm (SHA1)

N: Skipping acquire of configured file 'jdk1.8/binary-i386/Packages' as repository 'http://storage.googleapis.com/bazel-apt stable InRelease' doesn't support architecture 'i386'

E: Failed to fetch file:/var/cuda-repo-8-0-rc/Packages  File not found - /var/cuda-repo-8-0-rc/Packages (2: No such file or directory)

E: Failed to fetch store:/var/lib/apt/lists/partial/apt.dockerproject.org_repo_dists_ubuntu-xenial_main_binary-i386_Packages  Empty files can't be valid archives

E: Some index files failed to download. They have been ignored, or old ones used instead.

I had a simalar issue with "cuda-repo-ubuntu1504-7-5-local_7.5-18_amd64.deb" on Ubuntu 16.04LTS after removing the package with: sudo dpkg -r cuda-repo-ubuntu1504-7-5-local

Solved it with the next command: sudo dpkg --purge cuda-repo-ubuntu1504-7-5-local