Installing a PKCS 12 File onto an F5 Device

I have been able to upload my pfx file to the devices downloads and such and checked using /mgmt/tm/util/bash. I have been trying to install it on the F5 device using:

{

"command": "install",

"name": f"{appname}.geico.com",

"from-local-file": f"/var/config/rest/downloads/{cert_file_name}"

}

But I receive the error, 
Error uploading certificate: {"code":400,"message":"Key management library returned bad status: -7, error:0D07207B:asn1 encoding routines:ASN1_get_object:header too long","errorStack":[],"apiError":26214401}

What can I change to correctly install?