No value provided error

[yostrokon]

Using https://cartodb-basemaps-{s}.global.ssl.fastly.net/rastertiles/voyager/{z}/{x}/{y}{r}.png for the tile layer provider i have an error
I/flutter ( 4079): The following message was thrown building TileLayer(dirty, state: _TileLayerState#fec9d):
I/flutter ( 4079): No value provided for variable r
I/flutter ( 4079):
I/flutter ( 4079): When the exception was thrown, this was the stack:
I/flutter ( 4079): #0 template. (package:flutter_map/src/core/util.dart:8:7)
I/flutter ( 4079): #1 _StringBase.replaceAllMapped (dart:core/runtime/libstring_patch.dart:716:35)
I/flutter ( 4079): #2 template (package:flutter_map/src/core/util.dart:5:14)
I/flutter ( 4079): #3 _TileLayerState.getTileUrl (package:flutter_map/src/layer/tile_layer.dart:155:12)
I/flutter ( 4079): #4 _TileLayerState._createTileWidget (package:flutter_map/src/layer/tile_layer.dart:434:36)
I/flutter ( 4079): #5 _TileLayerState.build (package:flutter_map/src/layer/tile_layer.dart:373:23)

As i remember "r" in the template was for the retina displays indication and switching resolution twice.

[johnpryan]

did you provide a variable for r in the additionalOptions map?

[yostrokon]

After reading cartodb issues on the github replaced {r} with @2x.png
https://cartodb-basemaps-{s}.global.ssl.fastly.net/rastertiles/voyager/{z}/{x}/{y}@2x.png.png

[johnpryan]

👍