json api call error, what am I doing wrong - php

Question

I made an api call successfully but am getting errors after indexing it
$json = file_get_contents('https://app.morenaija.ng/#api/search/YouTube/'.$search_term.'');
$yt_data = json_decode($json);
?>
below is the output response
{
"items": [
{
"id": "CevxZvSJLk8",
"title": "Katy Perry - Roar (Official)",
"thumbDefault": "https://i.ytimg.com/vi/CevxZvSJLk8/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLDY5ZX7PoN7KNzXXEdQ_Yvch8qqQQ",
"channelTitle": "Katy Perry",
"channelId": "UCYvmuw-JtVrTZQ-7Y4kd63Q",
"publishedAt": "6 years ago",
"duration": "4:30",
"viewCount": "3068657449"
},
{
"id": "UW5SMrURVbM",
"title": "Roar - Katy Perry (Lyrics) ??",
"thumbDefault": "https://i.ytimg.com/vi/UW5SMrURVbM/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLBFmmujndykkc75SeCIl05VPHaglw",
"channelTitle": "DopeLyrics",
"channelId": "UCvR2R7j218tzejtTsb_X6Rw",
"publishedAt": "1 year ago",
"duration": "3:51",
"viewCount": "14073787"
},
{
"id": "FqkfBzRb43o",
"title": "Katy Perry - Roar : Part 2 (Official Cover by 10 year-old Mariangeli from HitStreak)",
"thumbDefault": "https://i.ytimg.com/vi/FqkfBzRb43o/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLBnXgcoefqzxawvmhB-QbCvMUBENg",
"channelTitle": "ShowMobile",
"channelId": "UCYBFx-THKRWqAxq66qZk_ww",
"publishedAt": "6 years ago",
"duration": "3:47",
"viewCount": "307490768"
},
{
"id": "Rh47oTsRf-w",
"title": "Katy Perry - Roar (From “The Prismatic World Tour Live”)",
"thumbDefault": "https://i.ytimg.com/vi/Rh47oTsRf-w/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLAsKxSyujUT_ZCQqsAdpVQAGnxP3Q",
"channelTitle": "Katy Perry",
"channelId": "UCYvmuw-JtVrTZQ-7Y4kd63Q",
"publishedAt": "4 years ago",
"duration": "4:33",
"viewCount": "21381621"
},
{
"id": "KRlhDkwJkHU",
"title": "Katy Perry - Roar (OFFICIAL 1 Hour)",
"thumbDefault": "https://i.ytimg.com/vi/KRlhDkwJkHU/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLCOvC3IMGpgbitf9nn58BxMFpqJnw",
"channelTitle": "SONGS 1 HOUR",
"channelId": "UCEo7MW5ArVEzQCQRpTuNGDg",
"publishedAt": "4 years ago",
"duration": "1:01:11",
"viewCount": "27253"
},
{
"id": "empcJOD-bA0",
"title": "Roar by Katy Perry Lyrics",
"thumbDefault": "https://i.ytimg.com/vi/empcJOD-bA0/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLBcizW9oc4KLGEo5o3Z2kOmKbKOkQ",
"channelTitle": "mulero ibrahim",
"channelId": "UCEl6sNUx9xHQ8zyypGJnlWQ",
"publishedAt": "4 years ago",
"duration": "3:45",
"viewCount": "423025"
},
{
"id": "K-w2sYAqMKw",
"title": "Katy Perry - Roar (One Love Manchester)",
"thumbDefault": "https://i.ytimg.com/vi/K-w2sYAqMKw/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLDjF35LoaRotGJ8WvhB4Nc9oZPvqQ",
"channelTitle": "BBC Music",
"channelId": "UCZtDUmC3W7j25XHZWFT_XgQ",
"publishedAt": "2 years ago",
"duration": "3:50",
"viewCount": "12996443"
},
{
"id": "sLZvdAdlQq4",
"title": "Play Doh ROAR - Katy Perry Barbie Doll Inspired Costume",
"thumbDefault": "https://i.ytimg.com/vi/sLZvdAdlQq4/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLA-i8iXAj-galqb2-0P1w82JdDXcQ",
"channelTitle": "Fondanista",
"channelId": "UCVNrpO7KiVMdwOdFZwLkWRA",
"publishedAt": "4 years ago",
"duration": "2:58",
"viewCount": "14677198"
},
{
"id": "0KSOMA3QBU0",
"title": "Katy Perry - Dark Horse (Official) ft. Juicy J",
"thumbDefault": "https://i.ytimg.com/vi/0KSOMA3QBU0/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLDa1ue7JhfY14YUSCsVhgf7o2kWyw",
"channelTitle": "Katy Perry",
"channelId": "UCYvmuw-JtVrTZQ-7Y4kd63Q",
"publishedAt": "6 years ago",
"duration": "3:45",
"viewCount": "2773465353"
},
{
"id": "Z0Q8j3HJagE",
"title": "Katy Perry - Making of the \"Roar\" Music Video",
"thumbDefault": "https://i.ytimg.com/vi/Z0Q8j3HJagE/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLAj6fVgZFc8eblIa5hC6CwvxasbNQ",
"channelTitle": "Katy Perry",
"channelId": "UCYvmuw-JtVrTZQ-7Y4kd63Q",
"publishedAt": "6 years ago",
"duration": "22:31",
"viewCount": "20739183"
},
{
"id": "EyLCXC3rV2M",
"title": "**LYRICS** Katy Perry - Roar",
"thumbDefault": "https://i.ytimg.com/vi/EyLCXC3rV2M/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLBGnc2_UQBdmVbEvfzHuZf6GVldlQ",
"channelTitle": "ilpescepalla",
"channelId": "UCTnd7uvo-uWwlB9qvh0aucA",
"publishedAt": "6 years ago",
"duration": "4:04",
"viewCount": "2940062"
},
{
"id": "pQQ24JwtRUI",
"title": "Olivia Sings Roar | The Voice Kids Australia 2014",
"thumbDefault": "https://i.ytimg.com/vi/pQQ24JwtRUI/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLCKE6eUp7Iye7_Wx8_0YOOPwpWamw",
"channelTitle": "The Voice Kids Australia",
"channelId": "UCUDR5r3ow3goI1iZgGlnoyw",
"publishedAt": "5 years ago",
"duration": "4:28",
"viewCount": "95223791"
},
{
"id": "aqhCJW890So",
"title": "Mariangeli from HitStreak - ROAR : Part 1",
"thumbDefault": "https://i.ytimg.com/vi/aqhCJW890So/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLCj4EwhFnnFVcjJtF_3hUBYQ83WZw",
"channelTitle": "ShowMobile",
"channelId": "UCYBFx-THKRWqAxq66qZk_ww",
"publishedAt": "6 years ago",
"duration": "0:33",
"viewCount": "32701801"
},
{
"id": "KlyXNRrsk4A",
"title": "Katy Perry - Last Friday Night (T.G.I.F.)",
"thumbDefault": "https://i.ytimg.com/vi/KlyXNRrsk4A/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLAR2QvImCYQhf_dP5WFJiWVKU00fw",
"channelTitle": "Katy Perry",
"channelId": "UCYvmuw-JtVrTZQ-7Y4kd63Q",
"publishedAt": "8 years ago",
"duration": "8:11",
"viewCount": "1239885938"
},
{
"id": "UUT2GTujJI0",
"title": "Katy Perry - Roar Lyrics",
"thumbDefault": "https://i.ytimg.com/vi/UUT2GTujJI0/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLDUKvQC8DQIg7dD39mEjDetWdHMsA",
"channelTitle": "K- Hype",
"channelId": "UCcoS9-5e2PPrO5gIqC9Fy4Q",
"publishedAt": "6 years ago",
"duration": "3:45",
"viewCount": "90138"
},
{
"id": "QGJuMBdaqIw",
"title": "Katy Perry - Firework (Official)",
"thumbDefault": "https://i.ytimg.com/vi/QGJuMBdaqIw/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLCVFJ6nMr1OyDp5P9wNafG76miRoA",
"channelTitle": "Katy Perry",
"channelId": "UCYvmuw-JtVrTZQ-7Y4kd63Q",
"publishedAt": "9 years ago",
"duration": "3:54",
"viewCount": "1233775759"
},
{
"id": "ZKmuyy6xEBU",
"title": "Katy Perry - Firework, Roar & Never Really Over LIVE - SHEIN Together",
"thumbDefault": "https://i.ytimg.com/vi/ZKmuyy6xEBU/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLAqsqPbUkw6GHnIB_my6JIuS9ondA",
"channelTitle": "KPEZ",
"channelId": "UCv1DBOB5sc6vrjYEkwNsHcw",
"publishedAt": "1 day ago",
"duration": "11:52",
"viewCount": "2688"
},
{
"id": "qvBzVWdwZFg",
"title": "Katy Perry - Roar (Live # BBC Radio 1's Big Weekend)",
"thumbDefault": "https://i.ytimg.com/vi/qvBzVWdwZFg/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLDujpTCwyTAWK3t-MozoxcjvBhtjw",
"channelTitle": "HeyHey Hey",
"channelId": "UCMYxD0p4_-GxQ1qYYDsK-FQ",
"publishedAt": "3 years ago",
"duration": "4:38",
"viewCount": "98831"
},
{
"id": "Sl8Wl4EFBGQ",
"title": "KATY PERRY WITH ZERO BUDGET! (Roar PARODY)",
"thumbDefault": "https://i.ytimg.com/vi/Sl8Wl4EFBGQ/hqdefault.jpg?sqp=-oaymwEYCKgBEF5IVfKriqkDCwgBFQAAiEIYAXAB&rs=AOn4CLCybyCTPmI82feN8Rzcmu_0ERrVpA",
"channelTitle": "LankyBox",
"channelId": "UCSf0s2ogUVYpJPuzW1zpAOg",
"publishedAt": "6 months ago",
"duration": "1:24",
"viewCount": "2759481"
}
]
}
below is how I get the things I want for this call
<?php echo $yt_data->items[0]->title; ?>
<?php echo $yt_data->items[0]->channelTitle; ?>
e.t.c
error_log
[20-Jan-2023 09:34:50 UTC] PHP Notice: Undefined index: title in /home/patch/aheadv.com/search_main.php on line 11
PHP Notice: Undefined variable: yt_data in /home/patch/aheadv.com/search_main.php on line 81
PHP Notice: Trying to get property 'items' of non-object in /home/patch/aheadv.com/search_main.php on line 81
PHP Notice: Trying to get property 'title' of non-object in /home/patch/aheadv.com/search_main.php on line 81
PHP Notice: Undefined variable: yt_data in /home/patch/aheadv.com/search_main.php on line 82
e.tc
Ho do I solve the error issues
<?php
require_once('admin/config.php');
require_once('includes/url_slug.php');
if(isset($_GET['change'])){ header("Location: ".$site_url."/".cano($_GET['q'])); }
$search_term = urlencode($_GET['q']);
$save_search = cano($_GET['q']);
$search_title = str_replace("Audio", " ", $save_search);
$search_title = ucwords($search_title);
$yt_id = $_GET["q"];
$url = 'https://app.morenaija.ng/#api/search/YouTube/'.$search_term;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$json = curl_exec($ch);
curl_close($ch);
if ($json === false) {
echo "Error: ".curl_error($ch);
} else {
$yt_data = json_decode($json);
if (json_last_error() !== JSON_ERROR_NONE) {
echo "Error: ".json_last_error_msg();
} else {
if(isset($yt_data->items[0]->title)){
$first_item_title = $yt_data->items[0]->title;
echo $first_item_title;
}
if(isset($yt_data->items[0]->channelId)){
$first_item_channelId = $yt_data->items[0]->channelId;
echo $first_item_channelId;
}
}
}
?>
<title><?php echo $yt_data->items[0]->title; ?> Mp4 mp3 Download - <?php echo $site_title;?></title>