My webpage is blocked, error 500. No idea of what's happening.

I have an error 500 entering on my webpage https://www.esvinum.com
Nor can I access my prestashop admin

I'm on OVH WebCloud

PLEASE HELP
I renamed .htaccess to avoid any corruption
I removed the firewall on that domain
Other domains I have on the same server work

MANY THANKS

Here are the last ERROR logs
[Tue Jul 04 01:17:05 2023] [error] [client 163.172.148.199] ModSecurity: Access denied with code 403 (phase 2). Operator EQ matched 0 at REQUEST_HEADERS. [file "/usr/local/apache2/conf/modsecurity/base_rules/modsecurity_crs_21_protocol_anomalies.conf"] [line "65"] [id "960009"] [rev "2.1.1"] [msg "Request Missing a User Agent Header"] [severity "NOTICE"] [tag "PROTOCOL_VIOLATION/MISSING_HEADER_UA"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "dev.esvinum.com"] [uri "/"] [unique_id "ZKNW8bNLX5mGqOlcQcgr-gAAAEM"]
[Tue Jul 04 08:31:03 2023] [error] [client 141.255.166.82] [host www.esvinum.com] AH01630: client denied by server configuration: /homez.155/activaecwz/esvinum/config/default.json, referer: http://esvinum.es/config/default.json
[Tue Jul 04 08:31:19 2023] [error] [client 141.255.166.82] [host www.esvinum.com] AH01630: client denied by server configuration: /homez.155/activaecwz/esvinum/config/config.json, referer: http://esvinum.es/config/config.json
[Tue Jul 04 08:33:19 2023] [error] [client 141.255.166.82] [host www.esvinum.com] AH01630: client denied by server configuration: /homez.155/activaecwz/esvinum/app/settings.py, referer: http://esvinum.es/app/settings.py
[Tue Jul 04 08:34:15 2023] [error] [client 141.255.166.82] [host www.esvinum.com] AH01630: client denied by server configuration: /homez.155/activaecwz/esvinum/config/environment.rb, referer: http://esvinum.es/config/environment.rb
[Tue Jul 04 08:34:55 2023] [error] [client 141.255.166.82] [host www.esvinum.com] AH01630: client denied by server configuration: /homez.155/activaecwz/esvinum/app/.env, referer: http://esvinum.es/app/.env
[Tue Jul 04 08:35:51 2023] [error] [client 141.255.166.82] [host www.esvinum.com] AH01630: client denied by server configuration: /homez.155/activaecwz/esvinum/config/.env, referer: http://esvinum.es/config/.env
[Tue Jul 04 08:39:19 2023] [error] [client 141.255.166.82] [host www.esvinum.com] AH01630: client denied by server configuration: /homez.155/activaecwz/esvinum/src/.env, referer: http://esvinum.es/src/.env
[Tue Jul 04 08:41:27 2023] [error] [client 141.255.166.82] [host www.esvinum.com] AH01630: client denied by server configuration: /homez.155/activaecwz/esvinum/app/sendgrid.env, referer: http://esvinum.es/app/sendgrid.env
[Tue Jul 04 08:42:23 2023] [error] [client 141.255.166.82] [host www.esvinum.com] AH01630: client denied by server configuration: /homez.155/activaecwz/esvinum/config/sendgrid.env, referer: http://esvinum.es/config/sendgrid.env
[Tue Jul 04 08:45:52 2023] [error] [client 141.255.166.82] [host www.esvinum.com] AH01630: client denied by server configuration: /homez.155/activaecwz/esvinum/src/sendgrid.env, referer: http://esvinum.es/src/sendgrid.env
[Tue Jul 04 18:47:35 2023] [error] [client 86.21.200.48] ModSecurity: Access denied with code 403 (phase 2). Matched phrase "curl" at REQUEST_HEADERS:user-agent. [file "/usr/local/apache2/conf/modsecurity/base_rules/modsecurity_crs_35_bad_robots.conf"] [line "26"] [id "990012"] [rev "2.1.1"] [msg "Rogue web site crawler"] [data "curl"] [severity "WARNING"] [tag "AUTOMATION/MALICIOUS"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "esvinum.com"] [uri "/"] [unique_id "ZKRNJz-kCV1d8Jzqz7jnEAAAAG8"]
[Tue Jul 04 19:41:25 2023] [error] [client 51.15.205.3] ModSecurity: Access denied with code 403 (phase 2). Operator EQ matched 0 at REQUEST_HEADERS. [file "/usr/local/apache2/conf/modsecurity/base_rules/modsecurity_crs_21_protocol_anomalies.conf"] [line "65"] [id "960009"] [rev "2.1.1"] [msg "Request Missing a User Agent Header"] [severity "NOTICE"] [tag "PROTOCOL_VIOLATION/MISSING_HEADER_UA"] [tag "WASCTC/WASC-21"] [tag "OWASP_TOP_10/A7"] [tag "PCI/6.5.10"] [hostname "www.dev.esvinum.com"] [uri "/"] [unique_id "ZKRZxTtXNNwtfUGKVDNN5QAAACI"]