Why this error occurs when I access my website?

I had website and it was working fine earlier. Today, when I access my site (https://www.jmjstore.org/) with Chrome, it displays the below error message

error shows
LVL 36
Loganathan NatarajanLAMP DeveloperAsked:
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Edwin HofferTechnical ExpertCommented:
Hello Loganathan,

The website don't support https try to visit it without https.

Correct URL: http://www.jmjstore.org/

Best Regards
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Dave BaldwinFixer of ProblemsCommented:
Your certificate works with https://jmjstore.org/ but not with https://www.jmjstore.org/ .  The 'www' version is not one of the names on the certificate.
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Loganathan NatarajanLAMP DeveloperAuthor Commented:
@Dave Baldwin - So what should I do ? Where do I change "www" ?
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Dave BaldwinFixer of ProblemsCommented:
You will have to contact Godaddy where you got your certificate and ask them how to change it.  This pic shows the names that are on the certificate.  The cert for my website has the domain name plus the domain name with 'www'.
jmstore cert
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Loganathan NatarajanLAMP DeveloperAuthor Commented:
Thank you, got it.
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Dave BaldwinFixer of ProblemsCommented:
You're welcome!
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F PCommented:
You only get 4 alt names for free from my experience, on a single certificate before they want you to use a wildcard or buy another, so it might make sense to redirect non www to www if you're going to use the subdomain Host of www with your domain. It'll save you the trouble of adding another name, and redirects with Apache are easy.
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Loganathan NatarajanLAMP DeveloperAuthor Commented:
@Frank Pennock.  Thanks for your inputs. I will discuss with Godaddy.
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