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Do I need admin consent on Microsoft Graph Api?

I'm working on a project in which I need to create events in my calendar, for this I am using the GRAPH API and there should be no user interaction. I'm using my personal account.
As a test I am making a call in Postman to which I add the token I got from the URL
https://login.microsoftonline.com/{tenant_id}/oauth2/v2.0/token
https://graph.microsoft.com/v1.0/users/me/events
{
"subject": "My event",
"start": {
"dateTime": "2020-06-22T13:32:53.037Z",
"timeZone": "UTC"
},
"end": {
"dateTime": "2020-06-29T13:32:53.037Z",
"timeZone": "UTC"
}
}
But I'm getting this error
{ "error": { "code": "NoPermissionsInAccessToken", "message": "The token contains no permissions, or permissions can not be understood.", "innerError": { "requestId": "b4ffb07b-8a7b-4893-93ae-1a3bb8be8f28", "date": "2020-06-23T03:14:49", "request-id": "b4ffb07b-8a7b-4893-93ae-1a3bb8be8f28" } } }
This is my token's body
These are the app permissions
Is this error because I don't have the admin consent or l'm doing something wrong?

Did you register your app in Azure AD?
Please follow steps described here:
https://learn.microsoft.com/en-us/graph/auth-v2-service?context=graph%2Fapi%2F1.0&view=graph-rest-1.0
Permission level you need is Calendar.ReadWrite

App engine endpoint warning

When I check my logs on my GAE app, I can see every so often a warning message like that:
com.google.api.control.Client flushAndScheduleReports: direct send of a report request failed because of endpoints.repackaged.com.google.api.client.http.HttpResponseException: 400 (Client.java:354)
{
"error": {
"code": 400,
"message": "Precondition check failed.",
"errors": [
{
"message": "Precondition check failed.",
"domain": "global",
"reason": "failedPrecondition"
}
],
"status": "FAILED_PRECONDITION"
}
}
However it seems the client app works as expected and I don't understand what it means.

If you have a low traffic API, this typically will happen if too long goes in between requests. The app will work as expected, but metric reporting may be off. This is because metrics are aggregated and reported every so many requests, unless you're running a backend instance.

using google api explorer to upload data to google cloud storage

i am trying to use google api explorer to first try to insert an object to google cloud storage.
the request looks like
POST https://www.googleapis.com/storage/v1/b/visionapibucket/o?key={YOUR_API_KEY}
{
"contentType": "image/jpeg",
"uploadType": "media",
"path": "/upload/storage/v1/b/visionapibucket/o"
}
but i see the error as
400 HTTP/2.0 400
- Show headers -
{
"error": {
"errors": [
{
"domain": "global",
"reason": "required",
"message": "Required"
},
{
"domain": "global",
"reason": "wrongUrlForUpload",
"message": "Upload requests must include an uploadType URL parameter and a URL path beginning with /upload/",
"extendedHelp": "https://cloud.google.com/storage/docs/json_api/v1/how-tos/upload"
}
],
"code": 400,
"message": "Required"
}
}
not sure what i am missing. please advise

Looks like a bug on the website. It doesn't seem like the explorer supports media.
The request it generated looks like:
POST https://www.googleapis.com/storage/v1/b/visionapibucket/o?key={YOUR_API_KEY}
But a proper upload request would look like:
POST https://www.googleapis.com/upload/storage/v1/b/visionapibucket/o?key={YOUR_API_KEY}&uploadType=media&name=myfile.jpeg
You'll also want to include a "Content-Type" header specifying that it's a JPEG image.
There's a guide on the various ways to upload objects using the JSON API here. The specific type you're looking for is like a simple upload.

Oauth Account Manager return error credentials

As I'm using oauth2.0 to get the user details it is working correct and giving correct credentials in android above 4.0 version.But when coming to android 2.3.6 it returning the following error credentials.As I'm using scope
public static final String SCOPE = "https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/plus.me https://www.googleapis.com/auth/userinfo.email";
.But at some time working fine when I'm signing with new account and next time when I'm choosing account from account chooser it returning the following
{
"error": {
"errors": [
{
"domain": "global",
"reason": "authError",
"message": "Invalid Credentials",
"locationType": "header",
"location": "Authorization"
}
],
"code": 401,
"message": "Invalid Credentials"
}
}
As i verified this credentials with following url
https://www.googleapis.com/oauth2/v1/userinfo?access_token={"our access token"}

OAuth2 and Drive API, can't list/retrieve files

I have a web application that needs to list all files from my Google Drive and then fetch them when clicked.
I use OAuth for authenticating and it seems to work (the same code works well with Calendar API). I tried different scopes in serviceAccountScopes with no avail.
Basically authentication is:
credential = new GoogleCredential.Builder().
setTransport(HTTP_TRANSPORT).
setJsonFactory(JSON_FACTORY).
setServiceAccountId(apiEmail).
setServiceAccountScopes(DriveScopes.DRIVE).
setServiceAccountPrivateKeyFromP12File(p12File).build();
credential.refreshToken();
service = new Drive.Builder(HTTP_TRANSPORT, JSON_FACTORY, credential).
setApplicationName("My API").build();
edit: I should Add that credential's accessToken is null before refreshToken() call.
After that I try:
FileList files = service.files().list().execute();
The returned FileList is (should contain items):
{"etag":"\"_U9FTLXcHskmKgrWAZqJlfW8kCo/vyGp6PvFo4RvsFtPoIWeCReyIC8\"","items":[],"kind":"drive#fileList","selfLink":"https://www.googleapis.com/drive/v2/files"}
If I check that selfLink the contents is:
{
"error": {
"errors": [
{
"domain": "usageLimits",
"reason": "dailyLimitExceededUnreg",
"message": "Daily Limit for Unauthenticated Use Exceeded. Continued use requires signup.",
"extendedHelp": "https://code.google.com/apis/console"
}
],
"code": 403,
"message": "Daily Limit for Unauthenticated Use Exceeded. Continued use requires signup."
}
}
Daily limit is not an issue here. (I guess this has nothing to do with this issue, since: https://stackoverflow.com/a/10639679/2090125). Also, I have enabled Drive and Drive SDK in Console (https://stackoverflow.com/a/10329353/2090125).
When downloading a file this is performed:
File file = service.files().get(fileId).execute();
And it produces this (fileId exists):
An error occured: com.google.api.client.googleapis.json.GoogleJsonResponseException: 404 Not Found
{
"code" : 404,
"errors" : [ {
"domain" : "global",
"message" : "File not found: 0B97KF40kTwrTaTllMnZCTV9ZSnM",
"reason" : "notFound"
} ],
"message" : "File not found: 0B97KF40kTwrTaTllMnZCTV9ZSnM"
}
And again when checking https://www.googleapis.com/drive/v2/files/0B97KF40kTwrTaTllMnZCTV9ZSnM the same "dailyLimitExceededUnreg" is seen.
What is going on here, is there a problem in my authentication? Should I configure Drive Integration in Drive SDK somehow? From Googles documentation I have understood that it's not necessary and the methods I'm using should work without further configuring.