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Linux/AM5749: Download problem on building SDK.

Part Number: AM5749

Tool/software: Linux

According to 

I was doing this step ./oe-layertool-setup.sh -f configs/processor-sdk/processor-sdk-05.02.00.10-config.txt

But it gives me:

cloning repo bitbake

Fetching origin
Previous HEAD position was 0c7cf572... bitbake-user-manual: Added "usehead" parameter.
Switched to branch '1.36'
Your branch is up-to-date with 'origin/1.36'.
Already up-to-date.
Note: checking out '0c7cf572b8350e7ec1e451d207d67f1f7ce018cb'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

git checkout -b <new-branch-name>

HEAD is now at 0c7cf572... bitbake-user-manual: Added "usehead" parameter.


cloning repo meta-processor-sdk

Fetching origin
Previous HEAD position was 3788231... mmcsd-lld-rtos: SRCREV update to 01.00.00.14B
Switched to branch 'master'
Your branch is up-to-date with 'origin/master'.
Already up-to-date.
Note: checking out '378823175fb71bc7073ff4b745d62ee5b37de7bf'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

git checkout -b <new-branch-name>

HEAD is now at 3788231... mmcsd-lld-rtos: SRCREV update to 01.00.00.14B


cloning repo meta-ros

Cloning into '/home/will/tisdk/sources/meta-ros'...
fatal: unable to access 'github.com/.../': error setting certificate verify locations:
CAfile: /tmp/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy/sy
ERROR: Could not clone repository at github.com/.../meta-ros.git

Do I need some certificate to download it ?