Nginx+Passenger Error - libcurl.so.4: version `CURL_OPENSSL_3' not found

nginx passenger ubuntu-18.04

You can install the required version 3 from the bionic repository if you don't depend on other software that already uses version 4:

sudo apt install libcurl3/bionic

This will ask you to remove curl itself, libcurl4, and dependend software. Consider carefully if you need those, before removing them.

You still can roll back by installing libcurl4 and the removed software again.

nginx passenger ubuntu-18.04

This fixed my problem:

sudo apt install libcurl4-openssl-dev

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