httpd fails to start because of "undefined symbol: apr_ldap_ssl_init"

Solution Verified - Updated -

Issue

  • httpd fails to start due to the following error:
Cannot load /etc/httpd/modules/mod_ldap.so into server: /etc/httpd/modules/mod_ldap.so: undefined symbol: apr_ldap_ssl_init

Environment

  • Red Hat Enterprise Linux (RHEL) 6.x
  • Apache httpd

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