unable to upload photos to online printer --Detected Display P3 Embedded Profile. Please convert to Adobe RGB or SRGB and upload again.

i use an online gallery Inprnt to print photos of artwork. in the past when using a camera they accepted my photos. but since i began using only my iphone to photograph my artwork i got this message when trying to upload the images: Detected Display P3 Embedded Profile. Please convert to Adobe RGB or SRGB and upload again.