TLS: could not load verify locations (file:`/path/to/example.pem',dir:`').

Issue

• Trying to set file or database containing global trusted Certificate Authority or global client certificates using LDAPTrustedGlobalCert but getting error TLS: could not load verify locations.
• I am trying to set the directory path and file name of the trusted CA certificates and/or system-wide client certificates mod_ldap should use when establishing an SSL or TLS connection to an LDAP server.
• /path/to/example.pem is present but still getting TLS: could not load verify locations (file:/path/to/example.pem',dir:').