Can't open .sh files in webinterface

Hello,

when i want to look at a .sh file i only get “403 Forbidden nginx” and the log says the following:
2020/07/23 09:40:52 [error] 20642#20642: *2393597 access forbidden by rule, client: xxx.xxx.xxx.xxx, server: DOMAIN, request: "GET /Tealk/shell-administration-scripts/-/blob/master/manage.sh HTTP/2.0", host: "gitlab.anzah.network", referrer: "https://DOMAIN/Tealk/shell-administration-scripts"

How can I fix this?

Thanks.