Resolving ftp.openailab.net (ftp.openailab.net)... failed: Name or service not known.

[Raman95431]

hello
when i try
wget ftp://ftp.openailab.net/tools/script/gen-pkg-config-pc.sh
i got this error
--2021-12-28 04:44:19-- ftp://ftp.openailab.net/tools/script/gen-pkg-config-pc.sh
=> ‘gen-pkg-config-pc.sh’
Resolving ftp.openailab.net (ftp.openailab.net)... failed: Name or service not known.
wget: unable to resolve host address ‘ftp.openailab.net’
how can i solve this problem
thanks