Brew: curl: (77) error setting certificate verify locations (seems like a duplicate)

[ghost]

• [x] Ran brew update and retried your prior step?
• [x] Ran brew doctor, fixed as many issues as possible and retried your prior step? (no issues occurred)
• [x] Confirmed this is a problem with Linuxbrew/brew and not specific formulae? If it's a formulae-specific problem please file this issue at https://github.com/Linuxbrew/homebrew-core/issues/new

Bug reports:

brew config
HOMEBREW_VERSION: 1.1.11
ORIGIN: https://github.com/Linuxbrew/brew
HEAD: 59c9ddbc1d9b9dfdeb0514768e0efd0112c63b25
Last commit: 2 days ago
Core tap ORIGIN: https://github.com/Linuxbrew/homebrew-core
Core tap HEAD: cfc225f1530c3d82768a153b0eb8da56f72276d8
Core tap last commit: 2 hours ago
HOMEBREW_PREFIX: /home/pi/.linuxbrew
HOMEBREW_REPOSITORY: /home/pi/.linuxbrew
HOMEBREW_CELLAR: /home/pi/.linuxbrew/Cellar
HOMEBREW_BOTTLE_DOMAIN: https://linuxbrew.bintray.com
CPU: single-core 32-bit arm
Homebrew Ruby: 2.4.1 => /home/pi/.linuxbrew/Cellar/ruby/2.4.1_1/bin/ruby
Clang: N/A
Git: 2.1.4 => /usr/bin/git
Perl: /usr/bin/perl
Python: /usr/bin/python => /usr/bin/python2.7
Ruby: /home/pi/.linuxbrew/bin/ruby => /home/pi/.linuxbrew/Cellar/ruby/2.4.1_1/bin/ruby
Java: N/A
Kernel: Linux 4.9.20+ armv6l GNU/Linux
OS: Raspbian GNU/Linux 8.0 (jessie)
Codename: jessie
OS glibc: 2.19
OS gcc: 4.9.2
Linuxbrew glibc: N/A
Linuxbrew gcc: N/A
Linuxbrew xorg: N/A

brew doctor
pi:~$ brew doctor
Your system is ready to brew.

brew update
pi:~$ brew update
Already up-to-date.

when I run brew upgrade I get:

pi:~$ brew upgrade
Updating Homebrew...
==> Upgrading 3 outdated packages, with result:
nano 2.8.0_1, vim 8.0.0553, sphinx-doc 1.5.5
==> Upgrading nano 
==> Downloading https://www.nano-editor.org/dist/v2.8/nano-2.8.0.tar.gz

curl: (77) error setting certificate verify locations:
  CAfile: /home/pi/.linuxbrew/etc/openssl/cert.pem
  CApath: /home/pi/.linuxbrew/etc/openssl/certs
Error: Failed to download resource "nano"
Download failed: https://www.nano-editor.org/dist/v2.8/nano-2.8.0.tar.gz
==> Upgrading vim 
==> Downloading https://github.com/vim/vim/archive/v8.0.0553.tar.gz
==> Downloading from https://codeload.github.com/vim/vim/tar.gz/v8.0.0553

curl: (77) error setting certificate verify locations:
  CAfile: /home/pi/.linuxbrew/etc/openssl/cert.pem
  CApath: /home/pi/.linuxbrew/etc/openssl/certs
Error: Failed to download resource "vim"
Download failed: https://github.com/vim/vim/archive/v8.0.0553.tar.gz
==> Upgrading sphinx-doc 
==> Downloading https://files.pythonhosted.org/packages/64/78/9d63754981e97c8e7c

curl: (77) error setting certificate verify locations:
  CAfile: /home/pi/.linuxbrew/etc/openssl/cert.pem
  CApath: /home/pi/.linuxbrew/etc/openssl/certs
Error: Failed to download resource "sphinx-doc"
Download failed: https://files.pythonhosted.org/packages/64/78/9d63754981e97c8e7cf14500d262fc573145624d4c765d5047f58e3fdf4e/Sphinx-1.5.5.tar.gz

I tried
https://github.com/Linuxbrew/legacy-linuxbrew/issues/238#issuecomment-70545008

which gave me

pi:~$ rm -f /home/me/.linuxbrew/etc/openssl/cert.pem
pi:~$ wc /home/me/.linuxbrew/etc/openssl/cert.pem
wc: /home/me/.linuxbrew/etc/openssl/cert.pem: No such file or directory
pi:~$ brew postinstall openssl
==> Downloading https://curl.haxx.se/ca/cacert-2017-01-18.pem

curl: (77) error setting certificate verify locations:
  CAfile: /home/pi/.linuxbrew/etc/openssl/cert.pem
  CApath: /home/pi/.linuxbrew/etc/openssl/certs
Error: Failed to download resource "openssl--cacert"
Download failed: https://curl.haxx.se/ca/cacert-2017-01-18.pem
pi:~$ wc /home/me/.linuxbrew/etc/openssl/cert.pem
wc: /home/me/.linuxbrew/etc/openssl/cert.pem: No such file or directory


and `sudo apt-get install ca-certificates` 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
ca-certificates is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

thanks

[sjackman]

Please enclose copy-and-paste blocks in triple back ticks.
See https://help.github.com/articles/basic-writing-and-formatting-syntax/#quoting-code

[sjackman]

See https://github.com/Linuxbrew/brew/wiki/FAQ#why-does-curl-fail

[ghost]

why do I have to use that insecure connection? Seemed as if it was working before even with the secure connection?

thanks

[sjackman]

It's only need to boot strap the brewed curl. Once you have brew install curl working, you can go back to using a secure connection.

[ghost]

ok thanks !