cnpd.pensions.rbm.mw has an A (IPv4) record (41.222.184.235) but a request to this address over port 80 did not succeed. Your web server must have at least one working IPv4 or IPv6 address.
A timeout was experienced while communicating with cnpd.pensions.rbm.mw/41.222.184.235: Get "http://cnpd.pensions.rbm.mw/.well-known/acme-challenge/letsdebug-test": context deadline exceeded
Trace:
@0ms: Making a request to http://cnpd.pensions.rbm.mw/.well-known/acme-challenge/letsdebug-test (using initial IP 41.222.184.235)
@0ms: Dialing 41.222.184.235
@10000ms: Experienced error: context deadline exceeded
A test authorization for cnpd.pensions.rbm.mw to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
41.222.184.235: Fetching http://cnpd.pensions.rbm.mw/.well-known/acme-challenge/eap-RbvTA3oL_YVCtAfRdjcbk-Sg8UKmBkPwjow0x6s: Timeout during connect (likely firewall problem)