05:55:43 SEVERE: 429 Too Many Requests
{
  "code" : 429,
  "errors" : [ {
    "domain" : "global",
    "message" : "Insufficient tokens for quota group and limit 'ReadGroupUSER-100s' of service 'sheets.googleapis.com', using the limit by ID '526347445479@824888877937'.",
    "reason" : "rateLimitExceeded"
  } ],
  "message" : "Insufficient tokens for quota group and limit 'ReadGroupUSER-100s' of service 'sheets.googleapis.com', using the limit by ID '526347445479@824888877937'.",
  "status" : "RESOURCE_EXHAUSTED"
}
Exception in thread "main" java.lang.NullPointerException
        at de.devcubehd.cloudsystem.d.a.a(DatabaseManager.java:125)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:81)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:50)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)
        at de.devcubehd.cloudsystem.d.d.a(UserSheet.java:52)