Apache server certificate does NOT include an ID which matches the server name

I'm having 20 pages that need to run in parallel in the browser window on Apache server in xammp. After a while Apache stops working and in logs I'm getting the error:

[Sat Feb 17 12:09:10.438448 2018] [core:warn] [pid 9872:tid 252] AH00098: pid file D:/xampp/apache/logs/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[Sat Feb 17 12:09:10.700463 2018] [ssl:warn] [pid 9872:tid 252] AH01909: www.example.com:443:0 server certificate does NOT include an ID which matches the server name
[Sat Feb 17 12:09:10.746466 2018] [mpm_winnt:notice] [pid 9872:tid 252] AH00455: Apache/2.4.10 (Win32) OpenSSL/1.0.1i PHP/5.6.3 configured -- resuming normal operations
[Sat Feb 17 12:09:10.746466 2018] [mpm_winnt:notice] [pid 9872:tid 252] AH00456: Apache Lounge VC11 Server built: Jul 17 2014 11:50:08
[Sat Feb 17 12:09:10.746466 2018] [core:notice] [pid 9872:tid 252] AH00094: Command line: 'd:\\xampp\\apache\\bin\\httpd.exe -d D:/xampp/apache'
[Sat Feb 17 12:09:10.747466 2018] [mpm_winnt:notice] [pid 9872:tid 252] AH00418: Parent: Created child process 6568
[Sat Feb 17 12:09:11.513510 2018] [ssl:warn] [pid 6568:tid 264] AH01909: www.example.com:443:0 server certificate does NOT include an ID which matches the server name
[Sat Feb 17 12:09:11.832528 2018] [ssl:warn] [pid 6568:tid 264] AH01909: www.example.com:443:0 server certificate does NOT include an ID which matches the server name
[Sat Feb 17 12:09:11.879531 2018] [mpm_winnt:notice] [pid 6568:tid 264] AH00354: Child: Starting 150 worker threads.

I changed the port from 443 to 8080 in httpd-ssl.conf
<VirtualHost _default_:8080>

and in http.conf
Listen 8080
ServerName localhost:8080
and I'm still getting the error

 

Port 443 should Listen in the httpd.conf.Also, confirm correct location of the certificate key file when creating the SSL certificate.