使用gatsby下载的项目，在develop环境正常运行但Gatsby build时总是报错

failed Building static HTML for pages - 1.539s

 ERROR #95313  HTML.COMPILATION

Building static HTML failed for path "/404/"

See our docs page for more info on this error: https://gatsby.dev/debug-html


  37 |   var setComponents = pluginConfig.head ? setHeadComponents : setPostBodyComponents;
  38 |   var renderHtml = function renderHtml() {
> 39 |     return "\n      " + (excludeGtagPaths.length ? "window.excludeGtagPaths=[" + excludeGtagPaths.join(",") + "];" : "") + "\n      " + (typeof
gtagConfig.anonymize_ip !== "undefined" && gtagConfig.anonymize_ip === true ? "function gaOptout(){document.cookie=disableStr+'=true; expires=Thu, 31 Dec 2099 
23:59:59 UTC;path=/',window[disableStr]=!0}var gaProperty='" + firstTrackingId +
"',disableStr='ga-disable-'+gaProperty;document.cookie.indexOf(disableStr+'=true')>-1&&(window[disableStr]=!0);" : "") + "\n      if(" + (pluginConfig.respectDNT ?
"!(navigator.doNotTrack == \"1\" || window.doNotTrack == \"1\")" : "true") + ") {\n        window.dataLayer = window.dataLayer || [];\n        function 
gtag(){dataLayer.push(arguments);}\n        gtag('js', new Date());\n\n        " + pluginOptions.trackingIds.map(function (trackingId) {
     |



                                                                                                                                                        ^
  40 |       return "gtag('config', '" + trackingId + "', " + JSON.stringify(gtagConfig) + ");";
  41 |     }).join("") + "\n      }\n      ";
  42 |   };


  WebpackError: TypeError: Cannot read properties of undefined (reading 'map') (from plugin: gatsby-plugin-google-gtag)
  
  - gatsby-ssr.js:39 
    [my-gatsby-site]/[gatsby-plugin-google-gtag]/gatsby-ssr.js:39:810
  
  - gatsby-ssr.js:50 
    [my-gatsby-site]/[gatsby-plugin-google-gtag]/gatsby-ssr.js:50:15
  
  - api-runner-ssr.js:48 
    my-gatsby-site/.cache/api-runner-ssr.js:48:22
  
  - api-runner-ssr.js:41 
    my-gatsby-site/.cache/api-runner-ssr.js:41:11
  
  - static-entry.js:356 
    my-gatsby-site/.cache/static-entry.js:356:5
  
  - index.js:57 
    [my-gatsby-site]/[balanced-match]/index.js:57:1
  
  - attributes.js:128 
    [my-gatsby-site]/[css-select]/lib/attributes.js:128:1
  
  - attributes.js:93 
    [my-gatsby-site]/[css-select]/lib/attributes.js:93:1
  

解决方案

// Gatsby.config.js
  plugins: [
    "gatsby-plugin-sass", 
    // "gatsby-plugin-google-gtag" 这样写会报错
    {
      resolve: "gatsby-plugin-google-gtag",
      options: {
        trackingIds: [process.env.GATSBY_GA_MEASUREMENT_ID],
        gtagConfig: {
          optimize_id: [process.env.GATSBY_GTM_ID],
          anonymize_ip: true,
          cookie_expires: 0,
        },
        pluginConfig: {
          head: true,
        },
      },
    },
  ]

持续更新中....