Help to fix certificate not trusted browser error on our website

Avg Bid (USD)
Project Budget (USD)
$30 - $60

Project Description:
Error displayed on Firefox:

The certificate is not trusted because no issuer chain was provided.

I need help the fix this problem. I believe that I may have installed the certificate incorrectly.

Highly experienced applicants only.

Skills required:
Website Management
About the employer:
Public Clarification Board
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$ 50
in 1 days
$ 45
in 0 days