Text_Icon is not working

[John_Henry_Jose]

My Text_Icon is stopped working…
It was working fine. but now working. It refers some site address like " The concatenation of all these text values ( …“https://placeholdit.imgix.net/~text?w=100&h=100&txtalign=middle,center&txttrack=1&txt=” …The value of column ‘Week No’

My expression is

TEXT_ICON(TEXT([Week No]))

• this expression was working fine… no idea what happens now.