Steps to reproduce:

1. Create template AAA
2. Create discovery rule on this template
3. Create host BBB
4. Create discovery rule on this host
5. Link template AAA to host
6. Send api request to create two host prototypes, one on host and one on template

       "method": "hostprototype.create",
       "params": [
           {
               "host": "{#HOST} prototype",
               "ruleid": "33768",
               "groupLinks": [
                   {
                       "groupid": "5"
                   }
               ]
           },
           {
               "host": "{#TEMPLATE} prototype",
               "ruleid": "35801",
               "groupLinks": [
                   {
                       "groupid": "5"
                   }
               ]
           }
       ],
   

Result:
PHP runtime error

Undefined offset: 33768 [api_jsonrpc.php:63 -> CJsonRpc->execute() -> CLocalApiClient->callMethod() -> CHostPrototype->create() -> CHostPrototype->inherit() -> CHostPrototype->prepareInheritedObjects() -> CConfigFile->{closure}() in include/classes/api/services/CHostPrototype.php:790]
Trying to access array offset on value of type null [api_jsonrpc.php:63 -> CJsonRpc->execute() -> CLocalApiClient->callMethod() -> CHostPrototype->create() -> CHostPrototype->inherit() -> CHostPrototype->prepareInheritedObjects() -> CConfigFile->{closure}() in include/classes/api/services/CHostPrototype.php:790]

Expected:
no errors