Merged query impossible to run

Good tod@s and thank you for your help in advance.

It turns out that I have several SQL queries that are returning the data correctly individually, but since I need all the data in the same table, I used the query merge.

= Table.Combine({SepQuery,OctQuery,QueryNov,QueryOct,QueryDec})

The thing is that it is not possible to run the combined query but it is possible to run it individually without problems, what can I do?

Thank you