Cannot find a differ supporting object '[object Object]' of type 'object' when reading json object

I'm getting an obj info like this:

{"github": "https://github.com/Hipo/university-domains-list", "example": "http://universities.hipolabs.com/search?name=middle&country=Turkey", "author": {"name": "hipo", "website": "http://hipolabs.com"}}

api.service.ts, i have the following:

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Injectable({
  providedIn: 'root'
})
export class ApiService {

  constructor (private http:HttpClient) { }

  getUni(){
      return this.http.get('http://universities.hipolabs.com/'); 
  }
}

app.component.ts looks like this:

import { Component, OnInit } from '@angular/core';
import { ApiService } from './api.service';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit {
  title = 'University API Info - http://universities.hipolabs.com/';
 
  uniData: any ; //= null;

  constructor(private api:ApiService) {}
  
  ngOnInit() {
    this.api.getUni().subscribe((data)=>{
      console.log(data);
      this.uniData = data;
    }, err=>{
      console.log(err);
    });
  }
  }

app.component.html I have the following:

  <ul>
  <li *ngFor="let uni of uniData">
     {{uni.github}} 
     {{uni.example}} 
     {{uni.author.name}} 
     {{uni.author.website}} 
  </li>
</ul>

I get this error:

ERROR Error: NG02200: Cannot find a differ supporting object '[object Object]' of type 'object'. NgFor only supports binding to Iterables.

Pls help. thanks