terraform-provider-grafana-crash

panic: interface conversion: interface {} is nil, not map[string]interface {}

goroutine 64 [running]:
github.com/grafana/terraform-provider-grafana/grafana.ReadAlertNotification(0xeaee08, 0xc0004e2b40, 0xc00032f200, 0xc4b7c0, 0xc0002404b0, 0xc0004eab70, 0xc0004dd908, 0x40e0f8)
	github.com/grafana/terraform-provider-grafana/grafana/resource_alert_notification.go:163 +0xc85
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*Resource).read(0xc0002b6000, 0xeaed98, 0xc000485b40, 0xc00032f200, 0xc4b7c0, 0xc0002404b0, 0x0, 0x0, 0x0)
	github.com/hashicorp/terraform-plugin-sdk/[email protected]/helper/schema/resource.go:347 +0x17f
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*Resource).RefreshWithoutUpgrade(0xc0002b6000, 0xeaed98, 0xc000485b40, 0xc0004a7490, 0xc4b7c0, 0xc0002404b0, 0xc0004b6848, 0x0, 0x0, 0x0)
	github.com/hashicorp/terraform-plugin-sdk/[email protected]/helper/schema/resource.go:624 +0x1cb
github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*GRPCProviderServer).ReadResource(0xc0000b00a8, 0xeaed98, 0xc000485b40, 0xc000485b80, 0xc000485b40, 0x40b965, 0xd2f540)
	github.com/hashicorp/terraform-plugin-sdk/[email protected]/helper/schema/grpc_provider.go:575 +0x43b
github.com/hashicorp/terraform-plugin-go/tfprotov5/server.(*server).ReadResource(0xc0004d9ea0, 0xeaee40, 0xc000485b40, 0xc0004e2780, 0xc0004d9ea0, 0xc0004e4450, 0xc000573ba0)
	github.com/hashicorp/[email protected]/tfprotov5/server/server.go:298 +0x105
github.com/hashicorp/terraform-plugin-go/tfprotov5/internal/tfplugin5._Provider_ReadResource_Handler(0xd62e20, 0xc0004d9ea0, 0xeaee40, 0xc0004e4450, 0xc0004e2720, 0x0, 0xeaee40, 0xc0004e4450, 0xc0005c4a20, 0x107)
	github.com/hashicorp/[email protected]/tfprotov5/internal/tfplugin5/tfplugin5_grpc.pb.go:344 +0x214
google.golang.org/grpc.(*Server).processUnaryRPC(0xc0000d6540, 0xeb65f8, 0xc00048b380, 0xc000324120, 0xc0001fe990, 0x134bf30, 0x0, 0x0, 0x0)
	google.golang.org/[email protected]/server.go:1286 +0x52b
google.golang.org/grpc.(*Server).handleStream(0xc0000d6540, 0xeb65f8, 0xc00048b380, 0xc000324120, 0x0)
	google.golang.org/[email protected]/server.go:1609 +0xd0c
google.golang.org/grpc.(*Server).serveStreams.func1.2(0xc00003c2d0, 0xc0000d6540, 0xeb65f8, 0xc00048b380, 0xc000324120)
	google.golang.org/[email protected]/server.go:934 +0xab
created by google.golang.org/grpc.(*Server).serveStreams.func1
	google.golang.org/[email protected]/server.go:932 +0x1fd

Error: The terraform-provider-grafana_v1.14.0 plugin crashed!