Coordinate reference system not supported

https://www.sentinel-hub.com/faq/how-can-i-clip-image-specific-polygon

We are getting “Coordinate reference system not supported” error please guide.

https://services.sentinel-hub.com/ogc/wms/?SERVICE=WMS&REQUEST=GetMap&VERSION=1.3.0&LAYERS=TRUE_COLOR&MAXCC=20&WIDTH=640&HEIGHT=640&CRS=EPSG:4326
&BBOX=-7.885,38.540,-7.870,38.560&FORMAT=image/png&TRANSPARENT=1&
GEOMETRY=POLYGON((
-7.881314 38.553126,
-7.882678 38.552762))

The error you are stating gives me a filling that there is a space in your URL request, after “CRS=EPSG:4326”, e.g.:
&CRS=EPSG:4326 &BBOX

Further more, GEOMETRY parameter needs to be defined as a WKT polygon. Your value is not. See some basics about WKT here: