FAQ: I get Error 48 or Error 77 when using curl
If you have installed curl and are getting errors (48) or (77) when using it, it's likely that you're missing the ca-certificates and ca-bundle packages.
Run the following commands:
opkg update opkg install ca-certificates ca-bundle
If that does not resolve the issue, then you might have different versions of the curl utility and curl library (libcurl) installed.
Find out which curl and libcurl versions you have installed by running
If curl and libcurl are different versions (e.g curl 7.54.1 and libcurl 7.52.1) then you need to update libcurl:
opkg update opkg install curl libcurl
Now, your curl and libcurl packages are the same version and you will not have any issues.