Failure to open speech dispatcher

I got this error in my firefox browser and I can't hear anything:
Quote:

You can't use speech synthesis because Speech Dispatcher won't open."

Would enabling socket activation solve this? Thank you in advance.

Quote:

Checking Speech Dispatcher You should try and make sure that the following command is able to output sound on your system. If it does not, then it suggests something is wrong with your setup, and you cannot expect Firefox to be able to use it for speech synthesis. If it is working, you should hear the word hi" spoken. Code:spd-say hi

If I can hear "Hi" below from terminal on my speakers then does that mean speech dispatcher is running?
Code:spd-say hi