[BUG] 从LoveIt转FixIt错误

[lentikr]

Describe the bug 描述你遇到的错误

之前正常使用LoveIt主题，更换FixIt主题后参照主题说明只将theme字段从LoveIt修改为FixIt，随后运行hugo serve时报错。

❯ hugo serve
Start building sites …
hugo v0.101.0-466fa43c16709b4483689930a4f9ac8add5c9f66+extended linux/amd64 BuildDate=2022-06-16T07:09:16Z VendorInfo=gohugoio
WARN 2022/08/26 22:16:00 FixIt v0.2.16-RC
Current environment is "development". The "comment system", "CDN" and "fingerprint" will be disabled.

WARN 2022/08/26 22:16:00 FixIt v0.2.16-RC
You are using a development version of FixIt. Please consider using a stable version.
See https://github.com/hugo-fixit/FixIt/releases

ERROR 2022/08/26 22:16:00 render of "home" failed: "/home/zero/hugo_site/themes/FixIt/layouts/_default/baseof.html:17:8": execute of template failed: template: index.html:17:8: executing "index.html" at <partial "head/meta.html" .>: error calling partial: "/home/zero/hugo_site/themes/FixIt/layouts/partials/head/meta.html:26:14": execute of template failed: template: partials/head/meta.html:26:14: executing "partials/head/meta.html" at <.Site.Params.app.themeColor.light>: can't evaluate field light in type string
ERROR 2022/08/26 22:16:00 render of "section" failed: "/home/zero/hugo_site/themes/FixIt/layouts/_default/baseof.html:17:8": execute of template failed: template: _default/section.html:17:8: executing "_default/section.html" at <partial "head/meta.html" .>: error calling partial: "/home/zero/hugo_site/themes/FixIt/layouts/partials/head/meta.html:26:14": execute of template failed: template: partials/head/meta.html:26:14: executing "partials/head/meta.html" at <.Site.Params.app.themeColor.light>: can't evaluate field light in type string
ERROR 2022/08/26 22:16:00 render of "taxonomy" failed: "/home/zero/hugo_site/themes/FixIt/layouts/_default/baseof.html:17:8": execute of template failed: template: taxonomy/terms.html:17:8: executing "taxonomy/terms.html" at <partial "head/meta.html" .>: error calling partial: "/home/zero/hugo_site/themes/FixIt/layouts/partials/head/meta.html:26:14": execute of template failed: template: partials/head/meta.html:26:14: executing "partials/head/meta.html" at <.Site.Params.app.themeColor.light>: can't evaluate field light in type string
ERROR 2022/08/26 22:16:00 render of "term" failed: "/home/zero/hugo_site/themes/FixIt/layouts/_default/baseof.html:17:8": execute of template failed: template: taxonomy/list.html:17:8: executing "taxonomy/list.html" at <partial "head/meta.html" .>: error calling partial: "/home/zero/hugo_site/themes/FixIt/layouts/partials/head/meta.html:26:14": execute of template failed: template: partials/head/meta.html:26:14: executing "partials/head/meta.html" at <.Site.Params.app.themeColor.light>: can't evaluate field light in type string
Error: Error building site: failed to render pages: render of "taxonomy" failed: "/home/zero/hugo_site/themes/FixIt/layouts/_default/baseof.html:17:8": execute of template failed: template: taxonomy/terms.html:17:8: executing "taxonomy/terms.html" at <partial "head/meta.html" .>: error calling partial: "/home/zero/hugo_site/themes/FixIt/layouts/partials/head/meta.html:26:14": execute of template failed: template: partials/head/meta.html:26:14: executing "partials/head/meta.html" at <.Site.Params.app.themeColor.light>: can't evaluate field light in type string
Built in 48 ms

Expected behavior 期待的行为

• 从LoveIt切换到FixIt时能够无感。
• 提供上述问题的解决方式

Screenshots 屏幕截图

No response

Build Environment 构建环境

• OS: Arch on WSL2
• Theme version: commit d051dbd
• Hugo version: hugo v0.101.0-466fa43c16709b4483689930a4f9ac8add5c9f66+extended linux/amd64 BuildDate=2022-06-16T07:09:16Z VendorInfo=gohugoio

Preview Environment 预览环境

No response

Additional Information 补充信息

config.txt
这是我的配置文件（删除了部分个人信息）

[Lruihao]

@lentikr 见 #174

[Lruihao]

已支持从 LoveIt 平滑迁入 FixIt 不报错（FixIt>=0.2.16）