Hi ! This is because you provide URLs to see the file on google drive, not download them.
You can fix this by changing the urls to download urls:
_URLS = {
    "malayalam-english": {
        "TRAIN_DOWNLOAD_URL": "https://drive.google.com/u/0/uc?id=11A0kPNhrv9xd1ZwqCCw9HltfnsVvm_o9&export=download",
        "TEST_DOWNLOAD_URL": "https://drive.google.com/u/0/uc?id=1MJjjE5ieQ1xygMhqs_VYD0veZlBq794y&export=download",
    },
    "tamil-english": {
        "TRAIN_DOWNLOAD_URL": "https://drive.google.com/u/0/uc?id=1-2E-bdG_Ad_npW_QFKSUON2LeH1gENsX&export=download",
        "TEST_DOWNLOAD_URL": "https://drive.google.com/u/0/uc?id=1-24hW9E_GiyvAaeN-utR_97ghrFwnn9i&export=download",
    },
    "telugu-english": {
        "TRAIN_DOWNLOAD_URL": "https://drive.google.com/u/0/uc?id=1-7v7HUbT1bGMIs7THc2XnUb0rFK0wRHO&export=download",
        "TEST_DOWNLOAD_URL": "https://drive.google.com/u/0/uc?id=1-2tjohkFrqFj0qnMho22yZiVbTrgZ34_&export=download",
    },
    "tamil-telugu": {
        "TRAIN_DOWNLOAD_URL": "https://drive.google.com/u/0/uc?id=1-AvUG7RAeNPuFOQDIGa-xEL8FbtxNBHZ&export=download",
        "TEST_DOWNLOAD_URL": "https://drive.google.com/u/0/uc?id=1-AIIHxdbSTSru01pvNPiMe3UPldnz033&export=download",
    },
}