I have installed but getting the error of
The certificate is not trusted in all web browsers. You may need to install an Intermediate/chain certificate to link it to a trusted root certificate. Learn more about this error. You can fix this by following Sectigo's Certificate Installation Instructions for your server platform (use these instructions for InstantSSL). Pay attention to the parts about Intermediate certificates.
So looking for the file which is having SSLCertificateChainFile path.
I have kept all files at /opt/canvaslms/apps/canvaslms/conf/certs