Mysql application not registered

Hello Everybody

I have a problem using “Mysql application” on my dialplan

although I have installed the asterisk addons but it still gives me the message
Executing [33@Emg:1] Answer(“SIP/103-09944560”, “”) in new stack
[Oct 17 01:17:34] WARNING[10395]: pbx.c:1833 pbx_extension_helper: No application ‘MYSQL’ for extension (Emg, 33, 2)
== Spawn extension (Emg, 33, 2) exited non-zero on ‘SIP/103-09944560’

I don’t knew why
note that when I use the cli command " core show application Mysql" it returns

Your application(s) is (are) not registered

please help me and thanks in advance for you all

Best regards