Also 896 Unknown parameter in template for roll of honor stickers. And 895 Using Deprecated parameter in template for cemetery stickers.
When template https://www.wikitree.com/wiki/Template:Global_Cemeteries was converted to sticker parameter sub that defined the subproject was removed. That made it not needed. I think I should program editbot to remove it. it is used on over 600 profiles.
Parameter image is expected to have a name of the image and that image should be of the known type (.gif, .jpg, .png) That isn't the case on your profile. There is no need to have | image = in case there is no image specified. Removing the image parameter will clear the suggestion, although I think I will adjust the algorithm to allow empty parameter.
invalid image type: parameter: image
| image =