Hi All
I m trying validate the filed Image in Gallery, which I did figure out how to do it in certain ways, but it shows and error while running the app saying invalid userid I do not know whats the error actually for as the Id which I have passed is the email ID only and still showing the error as follows:

Any leads on this error experts/.
Please see that I used the formula something like this in Gallery Image.
ON image:
If(Office365Users.UserPhotoMetadata(ThisItem.'Created By'.Email).HasPhoto , ThisItem.'Created By'.Picture , 'collaboration-female-male' )
Please note I also tried below formula as suggested in one of the article and solutions on PowerApps Community but did not seems to be working fine for me.
If(!IsBlank(ThisItem.'Created By'.Email), If(Office365Users.UserPhotoMetadata(ThisItem.'Created By'.Email).HasPhoto , ThisItem.'Created By'.Picture , 'collaboration-female-male' ))
AND
If(!IsBlank(Text(ThisItem.'Created By'.Email)), If(Office365Users.UserPhotoMetadata(Text(ThisItem.'Created By'.Email)).HasPhoto , ThisItem.'Created By'.Picture , 'collaboration-female-male' ))
BUT NO LUCK
Thank you for helping on, much appreciated your time and efforts
Thanks a million.