X-API-Token: ********************
curl --location --request GET 'https://api.appcenter.ms/v0.1/apps///errors/errorfreeDevicePercentages?start=' \
--header 'X-API-Token;'
{
"averagePercentage": 0,
"dailyPercentages": [
{
"datetime": "string",
"percentage": 0
}
]
}