I was trying to export an old version of the android app from GitHub into the android studio, the project was not showing any issues in compilation however, as i tried to run the project, I encountered a run time error in the android studio log showed there is a Gradle sync error with message “No toolchains found in the NDK toolchains folder for ABI with prefix: arm-linux-androideabi”. For a solution, I search StackOverflow and found this theard .

As i have been using paid SSL certificates from namecheap for a long time, a friend of mine told me Letsencrypt issues you a free SSL certificate. A question raised in my mind that do certificates i pay for use better cryptography than free certificates?. After searching online i got to know “no! you can pay a certificate authority extra for an EV (“extended validation”) certificate, but that won’t give you better cryptography.

I faced a strange problem i went to college in the morning and when i came back in the evening my laptop was booting up to grub 2 command shell. And the reason was not known to me then i started looking for solutions. To my surprise there were no specific solutions available for Debian, However i thought i should try maybe they can work. The solutions were correct however somehow confusing so i thought i should write a blog about that so that if someone goes through same problem he can refer this blog.

Docker has a official installation guide for Debian . I followed all the steps that are mentioned in the guide. However in the end i faced the following error Package docker-ce is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source Package docker-ce-cli is not available, but is referred to by another package.