Error location build.command from netlify.toml: hugo --gc --minify

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Hello, I have a problem with my site during the built phase on Netlify. Before I was able to publish a site and now I wanted to update it. The code worked fine locally on R markdown. Then I imported the new code on github and I tried to update my site on netlify but it gave me this error. I’ve been looking for help for 2 weeks.
Please help. The deposit is on my github account: GitHub - BOUGHANMIChaima/blogdown: personnal website
Thank you in advance.

4:45:44 PM: Netlify Build                                                 
4:45:44 PM: ────────────────────────────────────────────────────────────────
4:45:44 PM: ​
4:45:44 PM: ❯ Version
4:45:44 PM:   @netlify/build 29.26.4
4:45:44 PM: ​
4:45:44 PM: ❯ Flags
4:45:44 PM:   baseRelDir: true
4:45:44 PM:   buildId: 6554e78d4a4ba92a891a8678
4:45:44 PM:   deployId: 6554e78d4a4ba92a891a867a
4:45:44 PM: ​
4:45:44 PM: ❯ Current directory
4:45:44 PM:   /opt/build/repo
4:45:44 PM: ​
4:45:44 PM: ❯ Config file
4:45:44 PM:   /opt/build/repo/netlify.toml
4:45:44 PM: ​
4:45:44 PM: ❯ Context
4:45:44 PM:   production
4:45:44 PM: ​
4:45:44 PM: build.command from netlify.toml                               
4:45:44 PM: ────────────────────────────────────────────────────────────────
4:45:44 PM: ​
4:45:44 PM: $ hugo --gc --minify
4:45:44 PM: Start building sites …
4:45:44 PM: hugo v0.120.4-f11bca5fec2ebb3a02727fb2a5cfb08da96fd9df+extended linux/amd64 BuildDate=2023-11-08T11:18:07Z VendorInfo=gohugoio
4:45:45 PM: Failed during stage "building site": Build script returned non-zero exit code: 2
4:45:45 PM: ERROR Could not find an author page at `/authors/admin`. Please check the value of `author` in your About widget and create an associated author page if one does not already exist. See https://wowchemy.com/docs/page-builder/#about
4:45:45 PM: Total in 491 ms
4:45:45 PM: Error: error building site: logged 1 error(s)
4:45:45 PM: ​
4:45:45 PM: "build.command" failed                                        
4:45:45 PM: ────────────────────────────────────────────────────────────────
4:45:45 PM: ​
4:45:45 PM:   Error message
4:45:45 PM:   Command failed with exit code 1: hugo --gc --minify (https://ntl.fyi/exit-code-1)
4:45:45 PM: ​
4:45:45 PM:   Error location
4:45:45 PM:   In build.command from netlify.toml:
4:45:45 PM:   hugo --gc --minify
4:45:45 PM: ​
4:45:45 PM:   Resolved config
4:45:45 PM:   build:
4:45:45 PM:     command: hugo --gc --minify
4:45:45 PM:     commandOrigin: config
4:45:45 PM:     environment:
4:45:45 PM:       - HUGO_VERSION
4:45:45 PM:       - HUGO_ENV
4:45:45 PM:       - HUGO_ENABLEGITINFO
4:45:45 PM:     publish: /opt/build/repo/public
4:45:45 PM:     publishOrigin: config
4:45:45 PM:   headers:
4:45:45 PM:     - for: /*
      values:
        Permissions-Policy: accelerometer=(), camera=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), usb=()
        Referrer-Policy: strict-origin-when-cross-origin
        Strict-Transport-Security: max-age=31536000; includeSubDomains
        X-Content-Type-Options: nosniff
        X-XSS-Protection: 1; mode=block
    - for: /index.webmanifest
      values:
        Content-Type: application/manifest+json
    - for: /index.xml
      values:
        Content-Type: application/rss+xml
4:45:45 PM: Build failed due to a user error: Build script returned non-zero exit code: 2
4:45:45 PM: Failing build: Failed to build site
4:45:45 PM: Finished processing build request in 12.289s
Deploying
Skipped
2

Duplicate of: Error: error building site: logged 1 error(s)