Can you please repost the screenshots. I can not see anything in the screenshots.
It looks like both tables in your CROSSJOIN have a column named 'No_'.
This is not allowed, because the returned tables would have two columns with the same name.
Try to restrict the number of columns that participate in the CROSSJOIN operation with a GROUPBY / SUMMARIZE or use SELECTCOLUMNS to rename some columns.
As the error message said, "No_" column exists in both tables. When using CROSSJOIN() function, column names from table arguments must all be different in all tables or an error is returned. Otherwise it can't do Cartesian. Please verify the columns in both tables. If both contains "No_" columns, you can join these to tables using "Merge Queries" in Query Editor.