PHP Composer HTTPS error 1416F086. Certificate verifying failed

Question

I suddenly get this nasty HTTPS error with PHP Composer and Composer used to work on my machine. There are already topics with the same issue on Github and also stackoverflo

Answer 1

I found a solution for this problem:

sudo apt-get purge ca-certificates 

sudo apt-get install ca-certificates

composer diagnose

Checking platform settings: OK
Checking git settings: OK
Checking http connectivity to packagist: OK
Checking https connectivity to packagist: OK
Checking github.com rate limit: OK
Checking disk free space: OK
Checking pubkeys: 
Tags Public Key Fingerprint: 57815BA2 7E54DC31 7ECC7CC5 573090D0  87719BA6 8F3BB723 4E5D42D0 84A14642
Dev Public Key Fingerprint: 4AC45767 E5EC2265 2F0C1167 CBBB8A2B  0C708369 153E328C AD90147D AFE50952
OK
Checking composer version: OK
Composer version: 1.7.3
PHP version: 7.2.12
PHP binary path: /usr/bin/php7.2