Give error if image file doesn't exist
Give error if image file doesn't exist

hamsterbacke23/wagtail,serzans/wagtail,kurtrwall/wagtail,zerolab/wagtail,hanpama/wagtail,JoshBarr/wagtail,mayapurmedia/wagtail,davecranwell/wagtail,thenewguy/wagtail,gogobook/wagtail,thenewguy/wagtail,kaedroho/wagtail,kaedroho/wagtail,nutztherookie/wagtail,iho/wagtail,nutztherookie/wagtail,Pennebaker/wagtail,Tivix/wagtail,Pennebaker/wagtail,jnns/wagtail,jnns/wagtail,gasman/wagtail,mjec/wagtail,jordij/wagtail,kaedroho/wagtail,hanpama/wagtail,nimasmi/wagtail,WQuanfeng/wagtail,darith27/wagtail,torchbox/wagtail,serzans/wagtail,tangentlabs/wagtail,Klaudit/wagtail,FlipperPA/wagtail,rv816/wagtail,hamsterbacke23/wagtail,chrxr/wagtail,jordij/wagtail,jordij/wagtail,kurtw/wagtail,mikedingjan/wagtail,mephizzle/wagtail,nimasmi/wagtail,tangentlabs/wagtail,gogobook/wagtail,thenewguy/wagtail,nimasmi/wagtail,FlipperPA/wagtail,thenewguy/wagtail,rsalmaso/wagtail,nrsimha/wagtail,mayapurmedia/wagtail,rsalmaso/wagtail,rv816/wagtail,kurtw/wagtail,mephizzle/wagtail,hanpama/wagtail,quru/wagtail,jordij/wagtail,chrxr/wagtail,rv816/wagtail,mjec/wagtail,serzans/wagtail,wagtail/wagtail,takeflight/wagtail,nilnvoid/wagtail,jnns/wagtail,iansprice/wagtail,rsalmaso/wagtail,JoshBarr/wagtail,serzans/wagtail,Toshakins/wagtail,torchbox/wagtail,kaedroho/wagtail,rjsproxy/wagtail,zerolab/wagtail,takeshineshiro/wagtail,davecranwell/wagtail,wagtail/wagtail,kurtrwall/wagtail,inonit/wagtail,nilnvoid/wagtail,Pennebaker/wagtail,mikedingjan/wagtail,mixxorz/wagtail,iansprice/wagtail,Klaudit/wagtail,mayapurmedia/wagtail,takeflight/wagtail,timorieber/wagtail,JoshBarr/wagtail,bjesus/wagtail,kurtrwall/wagtail,WQuanfeng/wagtail,bjesus/wagtail,nealtodd/wagtail,gasman/wagtail,zerolab/wagtail,quru/wagtail,mixxorz/wagtail,takeshineshiro/wagtail,kurtw/wagtail,mixxorz/wagtail,gogobook/wagtail,gasman/wagtail,nimasmi/wagtail,timorieber/wagtail,mikedingjan/wagtail,inonit/wagtail,rv816/wagtail,quru/wagtail,Klaudit/wagtail,nrsimha/wagtail,gasman/wagtail,gogobook/wagtail,iho/wagtail,nilnvoid/wagtail,wagtail/wagtail,bjesus/wagtail,zerolab/wagtail,Toshakins/wagtail,Tivix/wagtail,inonit/wagtail,nutztherookie/wagtail,nealtodd/wagtail,hanpama/wagtail,davecranwell/wagtail,Toshakins/wagtail,iho/wagtail,iansprice/wagtail,nealtodd/wagtail,hamsterbacke23/wagtail,mayapurmedia/wagtail,nilnvoid/wagtail,nutztherookie/wagtail,gasman/wagtail,iho/wagtail,takeshineshiro/wagtail,zerolab/wagtail,takeflight/wagtail,Klaudit/wagtail,Tivix/wagtail,mjec/wagtail,torchbox/wagtail,timorieber/wagtail,hamsterbacke23/wagtail,mephizzle/wagtail,timorieber/wagtail,thenewguy/wagtail,kurtw/wagtail,nealtodd/wagtail,darith27/wagtail,rsalmaso/wagtail,mikedingjan/wagtail,wagtail/wagtail,mixxorz/wagtail,WQuanfeng/wagtail,kaedroho/wagtail,tangentlabs/wagtail,rjsproxy/wagtail,bjesus/wagtail,takeshineshiro/wagtail,chrxr/wagtail,rjsproxy/wagtail,nrsimha/wagtail,tangentlabs/wagtail,Toshakins/wagtail,darith27/wagtail,FlipperPA/wagtail,kurtrwall/wagtail,torchbox/wagtail,rjsproxy/wagtail,FlipperPA/wagtail,WQuanfeng/wagtail,nrsimha/wagtail,jnns/wagtail,JoshBarr/wagtail,mephizzle/wagtail,Pennebaker/wagtail,chrxr/wagtail,inonit/wagtail,quru/wagtail,davecranwell/wagtail,darith27/wagtail,wagtail/wagtail,mixxorz/wagtail,takeflight/wagtail,Tivix/wagtail,rsalmaso/wagtail,mjec/wagtail,iansprice/wagtail