redirect from one domain to a sub-domain

So currently I have the need to get a redirect working for going from the root domain to a sub-domain. Current version of the F5 that I am working with is BIG-IP 11.2.1 Build 1306.0 Hotfix HF13.

https://sandboxcernercentral.com/audit-reports/admin is needing to be redirected to https://associates.sandboxcernercentral.com/sentinel

Here is the the iRule I have come up with but it is not working properly for me:

when HTTP_REQUEST {
if { [HTTP::host] eq "sandboxcernercentral.com" }{
if { [HTTP::uri] starts_with "/audit-reports/admin" }{ 
    HTTP::redirect "https://associates.sandboxcernercentral.com/sentinel"
    }
    } 
}

I try to do a curl to test out the redirect: curl -i https://sandboxcernercentral.com/audit-reports/admin

but it's getting a response of: curl: (56) SSLRead() return error -9806

I have a similar iRule setup for the root domain when just audit-reports is in the URI:

when HTTP_REQUEST {
if { [HTTP::host] eq "sandboxcernercentral.com" }{
if { [HTTP::uri] starts_with "/audit-reports" }{ 
    HTTP::redirect https://sandboxcernercentral.com/sentinel/
    }
    } 
}

It is working as expected and getting the following results from the curl:

curl -i https://sandboxcernercentral.com/audit-reports/
    HTTP/1.0 302 Found
    Location: https://sandboxcernercentral.com/sentinel/
    Server: BigIP
    Connection: Keep-Alive
    Content-Length: 0

Not sure where to go from here as to why we are getting the SSLRead error.