PDK Functions : Serverless Lua

There is no PDK function available for doing base 64 decoding and http client .

I am trying to do both using custom Lua code but code is not getting compiled

Any help will be much appreciated?

kong.log(kong.request.get_header(“Authorization”))
local token =
ngx.decode_base64(’]’)
kong.log(token)

Result appearing is nil for decoded data