[SOLVED] apt install package fails the first time, but succeds the second time

Issue

I try to install a custom ROS version on Ubuntu 20.04. Therefore I do: sudo apt install ros-noetic-desktop-full

Then I get the following error:

E: Failed to fetch https://custom_supplier.com/xyz/ubuntu/pool/main/o/opencv/libopencv-core4.2_4.2.0+dfsg-6_amd64.deb  500  Internal Server Error [IP: 164.128.158.103 443]

Now, I execute the command sudo apt install ros-noetic-desktop-full again. All packages are found and the installation succeeds. I even get this as output:

Get:1 https://custom_supplier.com/xyz/ubuntu focal/main amd64 libopencv-core4.2 amd64 4.2.0+dfsg-6 [1041 kB]

After that the installation is ok, and everything works fine.

I repeated this 4-5 times, and it is always the same behavior. The first installation always fails. But since the second one always works, there must be nothing wrong with package paths and passwords.

Does someone else experience something like that?

Thanks

Solution

The server (custom_supplier.com)you have in URL in repo is not stable and you can do nothing about this.

Answered By - Romeo Ninov

Answer Checked By - Terry (WPSolving Volunteer)