这是在aws lightail实例上，试图部署我的phoenix应用程序，混合local.hex失败，请问如何解决此问题？
可能是DNS问题，但不确定。
Could not install Hex because Mix could not download metadata at https://repo.hex.pm/instal ls/hex-1.x.csv.
mix local.hex --force
14:34:53.444 [error] Unable to load crypto library. Failed with error:
":load_failed, Failed to load NIF library: '/usr/lib/x86_64-linux-gnu/libcrypto.so.1.1: ver
sion `OPENSSL_1_1_1' not found (required by /usr/lib/erlang/lib/crypto-4.7/priv/lib/crypto.
so)'"
OpenSSL might not be installed on this system.
14:34:53.455 [warn] The on_load function for module crypto returned:
{:error, {:load_failed, 'Failed to load NIF library: \'/usr/lib/x86_64-linux-gnu/libcrypto.
so.1.1: version `OPENSSL_1_1_1\' not found (required by /usr/lib/erlang/lib/crypto-4.7/priv
/lib/crypto.so)\''}}
** (Mix) httpc request failed with: {:failed_connect, [{:to_address, {'repo.hex.pm', 443}},
{:inet, [:inet], {:eoptions, {:undef, [{:crypto, :supports, [], []}, {:tls_record, :suffic
ient_support, 1, [file: 'tls_record.erl', line: 743]}, {:tls_record, :supported_protocol_ve
rsions, 1, [file: 'tls_record.erl', line: 370]}, {:tls_record, :supported_protocol_versions
, 0, [file: 'tls_record.erl', line: 358]}, {:ssl, :handle_option, 4, [file: 'ssl.erl', line
: 1903]}, {:ssl, :process_options, 3, [file: 'ssl.erl', line: 1635]}, {:ssl, :handle_option
s, 3, [file: 'ssl.erl', line: 1589]}, {:ssl, :connect, 4, [file: 'ssl.erl', line: 593]}]}}}
]}
Could not install Hex because Mix could not download metadata at https://repo.hex.pm/instal
ls/hex-1.x.csv.
阅读完整的错误，我认为问题是在lightail实例上未安装OpenSSL。您必须先安装openssl。您如何执行此操作取决于操作系统。例如，在linux上，可以这样做：
sudo apt install openssl