Strange error when upgrading

when trying to run setup:upgrade i’m getting the error below.
I dont remember having any issues on my store.
I’ve tried to enable verbose on the upgrade using setup:upgrade -vv but wiithout success

Below is the error

SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘t_scope1_tmp WHERE
Non_unique = 1′ at line 2, query was: SHOW INDEXES FROM catalogsearch_fulltext_scope1_tmp WHERE Non_unique = 1

Can anyone help me please.

Regards