Speaker is mot working whilw doing online calls

[anujtyagi__]

Speaker and microphone of my samsung note 20 is woeking fine but while doing an online call suddenly speaker just stop working and i am unable to hear any voice from other side but i am audible to them 

[Samsung_Support2]

Dear Samsung Member,
  
Greetings from Samsung Customer Support! 

We acknowledge your query and apologize for the same. Please perform the below mentioned steps to resolve the issue:
  
* Check after rebooting your device. 
 
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support