Hi @wmq,
What Mattermost version are you on? If it includes the image proxy: is the image proxy turned on? If so, could you please try to turn it off? (Also, re HTTP status codes: 500 is not 404.)
Hi @wmq,
What Mattermost version are you on? If it includes the image proxy: is the image proxy turned on? If so, could you please try to turn it off? (Also, re HTTP status codes: 500 is not 404.)