Not sure why this keeps happening, but here's another small patch

.github/workflows/ensure-build.yml

@@ -17,7 +17,7 @@ jobs:
         with:
           node-version: '14'
           cache: 'npm'
-      - name: Restore node_modulescache
+      - name: Restore node_modules cache
         uses: actions/cache@v2
         with:
           path: node_modules

build/evaluate.js

@@ -54,7 +54,7 @@ module.exports = exports = async function process (tasks, cache) {
             });
             log.info(`Task (${task.action.name}) failed for file ${output}, fell back to saved duplicate ${status.duplicate}`);
           } catch (err2) {
-            log.error(`Task (${task.action.name}) failed for file ${output}.\n`, err);
+            log.error(`Task (${task.action.name}) failed for file ${output}, ${status.duplicate} could not be copied.\n`, err);
             return false;
           }
         } else {

build/page-tweets.js

@@ -73,7 +73,8 @@ module.exports = exports = async function tweets (pages) {
 
   function attachTweet (dict, tweetid) {
     if (!hasOwn(twitterCache, tweetid) && twitterBackup[tweetid]) {
-      log.error(`Tweet ${tweetid} is missing from the cache.`);
+      log.error(`Tweet ${tweetid} is missing from the cache but exists in backup? How did we get here?`);
+      twitterCache[tweetid] = tweetparse(twitterBackup[tweetid]);
       return;
     }
     const tweet = twitterCache[tweetid];