Encountered an error (InternalServerError) from host runtime.

Hi I have created azure function and it is running fine as expected. Later I created arm template for same azure function and i run as piepline in azure devops against same resource. I have given incremental mode in azure devops. When i deploy my arm template it works fine. Its deploying and changes are taking place. Only problem i am facing at the end it throws below error

`##[error]undefined: Encountered an error (InternalServerError) from host runtime.`

Below is my template

```
{
"type": "Microsoft.Web/sites",
"apiVersion": "2018-11-01",
"name": "[variables('fetchSciHubProductURLName')]",
"location": "[parameters('location')]",
"tags": {
"BU": "[parameters('Division')]",
"Environment": "[parameters('environment')]"
},
"kind": "functionapp",
"properties": {
"serverFarmId": "[parameters('serverfarms_APSERDEVDVLGENSEAWE01_Linux_externalid')]",
"clientAffinityEnabled": false,
"httpsOnly": false,
"siteConfig": {
"reservedInstanceCount": "1",
"appSettings": [
{
"name": "AzureWebJobsStorage",
"value": "storage account"
},
{
"name": "APPINSIGHTS_INSTRUMENTATIONKEY",
"value": "[parameters('storageAccount01APPINSIGHTS_INSTRUMENTATIONKEY')]"
},
{
"name": "APPLICATIONINSIGHTS_CONNECTION_STRING",
"value": "[parameters('storageAccount01APPLICATIONINSIGHTS_CONNECTION_STRING')]"
},
{
"name": "FUNCTIONS_EXTENSION_VERSION",
"value": "~3"
},
{
"name": "FUNCTIONS_WORKER_RUNTIME",
"value": "dotnet"
},
{
"name": "WEBSITE_ENABLE_SYNC_UPDATE_SITE",
"value": "true"
},
{
"name": "WEBSITE_RUN_FROM_PACKAGE",
"value": "1"
},
{
"name": "WEBSITES_ENABLE_APP_SERVICE_STORAGE",
"value": "true"
},
{
"name": "Test",
"value": "test"
}
]
}
}
},
{
"type": "Microsoft.Web/sites/functions",
"apiVersion": "2018-11-01",
"name": "[concat(variables('fetchSciHubProductURLName'), '/getproductsfromcoordinates')]",
"location": "[parameters('location')]",
"dependsOn": [
"[resourceId('Microsoft.Web/sites', variables('fetchSciHubProductURLName'))]"
]
},
{
"type": "Microsoft.Web/sites/functions",
"apiVersion": "2018-11-01",
"name": "[concat(variables('fetchSciHubProductURLName'), '/UploadFilesToAzureStorage')]",
"location": "[parameters('location')]",
"dependsOn": [
"[resourceId('Microsoft.Web/sites', variables('fetchSciHubProductURLName'))]"
]
}

```
can someone tell me why this issue is coming? Thank you