SQL Syntax Error

Hi! I just install your plugin and tested it with my form. but got this error in the admin:
[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 '... ' at line 2]

I tried to use your new hook cfdb7_before_save to apply esc_sql to the returned form data. But my modified data doesn’t seems to be used.

Can you help me please? ??
Thanks a lot!