Fill command says error at the tile data position

Until this afternoon (3/14/2023), the following command worked fine since forever..
/fill -826 63 -676 -887 73 -726 log 0 replace log
Now I get..
Syntax error: Unexpected "0": at " -726 log >>0<< replace l"
This form of the command has always worked.
This particular one changes all logs to nice oak brown ones for the wife