error uploading

Error Reporting Disabled - Error Payload:
[
    {
        "code": 2,
        "message": "Undefined array key \"filetoupload\"",
        "file": "\/d1\/projectpine.com\/00_Projects\/old-boneyard\/1stgen\/upload.php",
        "line": 8,
        "trace": [
            {
                "file": "\/d1\/projectpine.com\/www\/explore.php",
                "line": 97,
                "args": [
                    "\/d1\/projectpine.com\/00_Projects\/old-boneyard\/1stgen\/upload.php"
                ],
                "function": "include"
            },
            {
                "file": "\/d1\/projectpine.com\/www\/index.php",
                "line": 98,
                "args": [
                    "\/d1\/projectpine.com\/www\/explore.php"
                ],
                "function": "include"
            }
        ],
        "uri": "https:\/\/projectpine.com\/explore\/old-boneyard\/1stgen\/upload.php"
    },
    {
        "code": 2,
        "message": "Trying to access array offset on value of type null",
        "file": "\/d1\/projectpine.com\/00_Projects\/old-boneyard\/1stgen\/upload.php",
        "line": 8,
        "trace": [
            {
                "file": "\/d1\/projectpine.com\/www\/explore.php",
                "line": 97,
                "args": [
                    "\/d1\/projectpine.com\/00_Projects\/old-boneyard\/1stgen\/upload.php"
                ],
                "function": "include"
            },
            {
                "file": "\/d1\/projectpine.com\/www\/index.php",
                "line": 98,
                "args": [
                    "\/d1\/projectpine.com\/www\/explore.php"
                ],
                "function": "include"
            }
        ],
        "uri": "https:\/\/projectpine.com\/explore\/old-boneyard\/1stgen\/upload.php"
    },
    {
        "code": 8192,
        "message": "basename(): Passing null to parameter #1 ($path) of type string is deprecated",
        "file": "\/d1\/projectpine.com\/00_Projects\/old-boneyard\/1stgen\/upload.php",
        "line": 8,
        "trace": [
            {
                "file": "\/d1\/projectpine.com\/00_Projects\/old-boneyard\/1stgen\/upload.php",
                "line": 8,
                "function": "basename",
                "args": [
                    null
                ]
            },
            {
                "file": "\/d1\/projectpine.com\/www\/explore.php",
                "line": 97,
                "args": [
                    "\/d1\/projectpine.com\/00_Projects\/old-boneyard\/1stgen\/upload.php"
                ],
                "function": "include"
            },
            {
                "file": "\/d1\/projectpine.com\/www\/index.php",
                "line": 98,
                "args": [
                    "\/d1\/projectpine.com\/www\/explore.php"
                ],
                "function": "include"
            }
        ],
        "uri": "https:\/\/projectpine.com\/explore\/old-boneyard\/1stgen\/upload.php"
    }
]