Lots of warnings

ENV

Operating System:
Linux
 

Software:
Apache
 

MySQL version:
MariaDB Server v10.4.22
 

PHP Version:
7.3.33
 

PHP Max Input Vars:
5000
 

PHP Max Post Size:
32M

 

WordPress Environment
 
 

Version:
5.8.3

 

DW Question Answer Pro – 1.3.3
By DesignWall

 
When access Q&A page, there is lots of warnings
/var/log/php-fpm/www-error.log
[01-Jan-2022 17:44:20 UTC] PHP Warning: Cannot modify header information – headers already sent in /var/www/txtdb.com/public_html/wp-content/plugins/dw-question-answer-pro/inc/Posts/Base.php on line 20
[01-Jan-2022 17:44:20 UTC] PHP Warning: session_start(): Cannot start session when headers already sent in /var/www/txtdb.com/public_html/wp-content/plugins/dw-question-answer-pro/inc/Session.php on line 53
As same as:

Sesstion start error display

PHP Warning: Cannot modify header information – headers already sent in Base.php line 20

Is there any solution now?