Error while accessing oneDrive: User's mysite not found - json

Question

I'm trying to access oneDrive via Graph api, and when I hit the api, I get User's mysite not found.
GET https://graph.microsoft.com/beta/me/drive
{
"error": {
"code": "ResourceNotFound",
"message": "User's mysite not found.",
"innerError": {
"request-id": "13eb583d-c29a-42af-8868-bae06d554538",
"date": "2018-05-18T06:06:55"
}
}
}
So, looking out for the solution, I saw an issue where they said to get OneDrive for Business' location, But this returns UnauthorizedAccessException
GET https://graph.microsoft.com/beta/me?select=mySite
{
"error": {
"code": "-2147024891, System.UnauthorizedAccessException",
"message":
"Access denied. You do not have permission to perform this action or access this resource.",
"innerError": {
"request-id": "3489894e-faa0-42c6-9f3b-e76c4708ce15",
"date": "2018-05-18T06:10:00"
}
}
}
And when I hit for /me endpoint, there I see an empty array for provisionedPlans.
GET https://graph.microsoft.com/beta/me
{
"#odata.context": "https://graph.microsoft.com/beta/$metadata#users/$entity",
"id": "7e8397a6-b299-34a2-af06-d3487t5b5174",
//...
"onPremisesProvisioningErrors": [],
"provisionedPlans": []
}
My access token is
eyJ0eXAiOiJKV1QiLCJub25jZSI6IkFRQUJBQUFBQUFEWDhHQ2k2SnM2U0s4MlRzRDJQYjdySGc5dDJ4SmxkODFMRURNY1FuN3pMYVgyektLaDR2SF9FSFltd1JaQ3Y5TU55VDJOR250VmlDQVFmTXpiTWxoYkZWQ19nSEdtaWhfWlJfcVlpaGRyMHlBQSIsImFsZyI6IlJTMjU2IiwieDV0IjoiaUJqTDFSY3F6aGl5NGZweEl4ZFpxb2hNMllrIiwia2lkIjoiaUJqTDFSY3F6aGl5NGZweEl4ZFpxb2hNMllrIn0.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.JtXMDO2Whs24ItQIIPBEZj93Go5z0QowyZCy-msAw7-heGu7yQZrppuvBfv-rrAS1bvFw_aBDBALzX7rlHwsiU9KaEzrRdzUgc9lciDhuGsPZddGEZrSpTuhBPvLa-xI8_1bLMhSChLECU63rMnBYHZJesenWqPL0w1DsmkUHeR01Ff7l8pgsH3jemRK2NAr4LD-wyQrumJxz2h45luO9dICqPOGjI9hwrjNpSDJnhienDkUsrcOA2ijnWglCJ3GRN9RfrJ93osCaO3WpUoTIy66NApYR__YDGzO4HsTk_MA9OSQCHcw5mOaOeRKZmRTDPIokyYpeNgXBK9FmZivBg
Can't figure out that it is a access problem or provisioning problem. Can anyone suggest what's going wrong here.