Searching Net::Curl::Multi for callback function is not set returns a function of Net::Curl::Multi that raises this error, because some callback was not set. But it does not tell us, which callback it wanted to call.

As the problem is intermittent, I would assume some timeout or error condition. Maybe you can diagnose that using Wireshark or some other network sniffer, or find another way to set up all kinds of callback handlers to see which one placates the behaviour of Net::Curl or Net::Curl::Multi.

In reply to Re: Net::Curl::Multi on Amazon Linux 2023 instance by Corion
in thread Net::Curl::Multi on Amazon Linux 2023 instance by Krambambuli

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