I solved the problem but I still can't generate a certificate:
Can you help me fix the problem ?
bellow some of the los generated by caddy (I apologize for the length of the message):
caddy-1 | {"level":"error","ts":1778768831.1829667,"logger":"tls.obtain","msg":"could not get certificate from issuer","identifier":"openedx.univ-bejaia.dz","issuer":"acme-v02.api.letsencrypt.org-directory","error":"HTTP 400 urn:ietf:params:acme:error:connection - 41.111.207.114: Fetching https://openedx.univ-bejaia.dz:443/.well-known/acme-challenge/MDDB9NumYyRPMF23cvmNHlZ8oLWl5w_00fZa9PuSOgQ: Error getting validation data"}
caddy-1 | {"level":"warn","ts":1778768831.1830883,"logger":"http","msg":"missing email address for ZeroSSL; it is strongly recommended to set one for next time"}
caddy-1 | {"level":"error","ts":1778768831.8087902,"logger":"tls.obtain","msg":"could not get certificate from issuer","identifier":"openedx.univ-bejaia.dz","issuer":"acme.zerossl.com-v2-DV90","error":"account pre-registration callback: failed getting EAB credentials: HTTP 422: caddy_legacy_user_removed (code 2977)"}
caddy-1 | {"level":"error","ts":1778768831.80901,"logger":"tls.obtain","msg":"will retry","error":"[openedx.univ-bejaia.dz] Obtain: account pre-registration callback: failed getting EAB credentials: HTTP 422: caddy_legacy_user_removed (code 2977)","attempt":1,"retrying_in":60,"elapsed":10.195853689,"max_duration":2592000}
caddy-1 | {"level":"error","ts":1778768832.1108418,"logger":"http.acme_client","msg":"challenge failed","identifier":"meilisearch.openedx.univ-bejaia.dz","challenge_type":"http-01","problem":{"type":"urn:ietf:params:acme:error:connection","title":"","detail":"41.111.207.114: Fetching https://meilisearch.openedx.univ-bejaia.dz:443/.well-known/acme-challenge/TeRMrgTMidDLvBUErpt5jjNERFCAjSxAHHMgG1QXn7Q: Error getting validation data","instance":"","subproblems":}}
caddy-1 | {"level":"error","ts":1778768832.11089,"logger":"http.acme_client","msg":"validating authorization","identifier":"meilisearch.openedx.univ-bejaia.dz","problem":{"type":"urn:ietf:params:acme:error:connection","title":"","detail":"41.111.207.114: Fetching https://meilisearch.openedx.univ-bejaia.dz:443/.well-known/acme-challenge/TeRMrgTMidDLvBUErpt5jjNERFCAjSxAHHMgG1QXn7Q: Error getting validation data","instance":"","subproblems":},"order":"https://acme-v02.api.letsencrypt.org/acme/order/3334780226/510776789156","attempt":2,"max_attempts":3}
caddy-1 | {"level":"error","ts":1778768832.1109133,"logger":"tls.obtain","msg":"could not get certificate from issuer","identifier":"meilisearch.openedx.univ-bejaia.dz","issuer":"acme-v02.api.letsencrypt.org-directory","error":"HTTP 400 urn:ietf:params:acme:error:connection - 41.111.207.114: Fetching https://meilisearch.openedx.univ-bejaia.dz:443/.well-known/acme-challenge/TeRMrgTMidDLvBUErpt5jjNERFCAjSxAHHMgG1QXn7Q: Error getting validation data"}
caddy-1 | {"level":"warn","ts":1778768832.1110094,"logger":"http","msg":"missing email address for ZeroSSL; it is strongly recommended to set one for next time"}
caddy-1 | {"level":"error","ts":1778768832.297565,"logger":"tls.obtain","msg":"could not get certificate from issuer","identifier":"meilisearch.openedx.univ-bejaia.dz","issuer":"acme.zerossl.com-v2-DV90","error":"account pre-registration callback: failed getting EAB credentials: HTTP 422: caddy_legacy_user_removed (code 2977)"}
caddy-1 | {"level":"error","ts":1778768832.2976158,"logger":"tls.obtain","msg":"will retry","error":"[meilisearch.openedx.univ-bejaia.dz] Obtain: account pre-registration callback: failed getting EAB credentials: HTTP 422: caddy_legacy_user_removed (code 2977)","attempt":1,"retrying_in":60,"elapsed":10.684478901,"max_duration":2592000}
caddy-1 | {"level":"error","ts":1778768832.939397,"logger":"http.acme_client","msg":"challenge failed","identifier":"apps.openedx.univ-bejaia.dz","challenge_type":"http-01","problem":{"type":"urn:ietf:params:acme:error:connection","title":"","detail":"41.111.207.114: Fetching https://apps.openedx.univ-bejaia.dz:443/.well-known/acme-challenge/l4BLroO6Qm7Vu_lR-qLptw5bgCdzhc8FzzUBT00HxIU: Error getting validation data","instance":"","subproblems":}}
caddy-1 | {"level":"error","ts":1778768832.939444,"logger":"http.acme_client","msg":"validating authorization","identifier":"apps.openedx.univ-bejaia.dz","problem":{"type":"urn:ietf:params:acme:error:connection","title":"","detail":"41.111.207.114: Fetching https://apps.openedx.univ-bejaia.dz:443/.well-known/acme-challenge/l4BLroO6Qm7Vu_lR-qLptw5bgCdzhc8FzzUBT00HxIU: Error getting validation data","instance":"","subproblems":},"order":"https://acme-v02.api.letsencrypt.org/acme/order/3334780206/510776791046","attempt":2,"max_attempts":3}
caddy-1 | {"level":"error","ts":1778768832.9394724,"logger":"tls.obtain","msg":"could not get certificate from issuer","identifier":"apps.openedx.univ-bejaia.dz","issuer":"acme-v02.api.letsencrypt.org-directory","error":"HTTP 400 urn:ietf:params:acme:error:connection - 41.111.207.114: Fetching https://apps.openedx.univ-bejaia.dz:443/.well-known/acme-challenge/l4BLroO6Qm7Vu_lR-qLptw5bgCdzhc8FzzUBT00HxIU: Error getting validation data"}
caddy-1 | {"level":"warn","ts":1778768832.9395719,"logger":"http","msg":"missing email address for ZeroSSL; it is strongly recommended to set one for next time"}
caddy-1 | {"level":"error","ts":1778768833.1246226,"logger":"tls.obtain","msg":"could not get certificate from issuer","identifier":"apps.openedx.univ-bejaia.dz","issuer":"acme.zerossl.com-v2-DV90","error":"account pre-registration callback: failed getting EAB credentials: HTTP 422: caddy_legacy_user_removed (code 2977)"}
caddy-1 | {"level":"error","ts":1778768833.1246614,"logger":"tls.obtain","msg":"will retry","error":"[apps.openedx.univ-bejaia.dz] Obtain: account pre-registration callback: failed getting EAB credentials: HTTP 422: caddy_legacy_user_removed (code 2977)","attempt":1,"retrying_in":60,"elapsed":11.511526126,"max_duration":2592000}
caddy-1 | {"level":"error","ts":1778768833.2936373,"logger":"http.acme_client","msg":"challenge failed","identifier":"studio.openedx.univ-bejaia.dz","challenge_type":"http-01","problem":{"type":"urn:ietf:params:acme:error:connection","title":"","detail":"41.111.207.114: Fetching https://studio.openedx.univ-bejaia.dz:443/.well-known/acme-challenge/QuDzLvjz98N9eTFKOZ5Up3wOwvPYaOhyO88ROnLCb8Q: Error getting validation data","instance":"","subproblems":}}
caddy-1 | {"level":"error","ts":1778768833.293678,"logger":"http.acme_client","msg":"validating authorization","identifier":"studio.openedx.univ-bejaia.dz","problem":{"type":"urn:ietf:params:acme:error:connection","title":"","detail":"41.111.207.114: Fetching https://studio.openedx.univ-bejaia.dz:443/.well-known/acme-challenge/QuDzLvjz98N9eTFKOZ5Up3wOwvPYaOhyO88ROnLCb8Q: Error getting validation data","instance":"","subproblems":},"order":"https://acme-v02.api.letsencrypt.org/acme/order/3334780196/510776788576","attempt":2,"max_attempts":3}
caddy-1 | {"level":"error","ts":1778768833.2936983,"logger":"tls.obtain","msg":"could not get certificate from issuer","identifier":"studio.openedx.univ-bejaia.dz","issuer":"acme-v02.api.letsencrypt.org-directory","error":"HTTP 400 urn:ietf:params:acme:error:connection - 41.111.207.114: Fetching https://studio.openedx.univ-bejaia.dz:443/.well-known/acme-challenge/QuDzLvjz98N9eTFKOZ5Up3wOwvPYaOhyO88ROnLCb8Q: Error getting validation data"}