DateDiff SQL Error

DateDiff SQL Error

I have a problem with my SQL syntax. But I can not determine what is wrong
with the syntax. The syntax is:
SELECT * FROM Inmuebles WHERE DATEDIFF(day, FechaIngreso, getdate()) <= 30
The reason why I put three parameters in the DATEDIFF function is because
that I have read on here: DATEDIFF
The execution of this query has returned the following error:
#1582 - Incorrect parameter count in the call to native function 'DATEDIFF'
Then Google the mistake, and I came across the following post:
Error in calculating age in MySQL?
Having read this post, I decided to leave the query in this way:
SELECT * FROM Inmuebles WHERE DATEDIFF(FechaIngreso, getdate()) <= 30
But unfortunately tripped me with this error:
#1547 - Column count of mysql.proc is wrong. Expected 20, found 16. The
table is probably corrupted
Thanks for taking the time to read, please I hope you can forgive my
horrible way to write English and can help with this problem. Greetings!