diff --git a/keyserver/src/database/migrations.js b/keyserver/src/database/migrations.js
--- a/keyserver/src/database/migrations.js
+++ b/keyserver/src/database/migrations.js
@@ -8,10 +8,18 @@
 import { dbQuery, SQL } from './database';
 
 async function makeSureBaseRoutePathExists(filePath: string): Promise<void> {
-  const readFile = await fs.promises.open(filePath, 'r');
-  const contents = await readFile.readFile('utf8');
-  const json = JSON.parse(contents);
-  await readFile.close();
+  let readFile, json;
+  try {
+    readFile = await fs.promises.open(filePath, 'r');
+    const contents = await readFile.readFile('utf8');
+    json = JSON.parse(contents);
+  } catch {
+    return;
+  } finally {
+    if (readFile) {
+      await readFile.close();
+    }
+  }
   if (json.baseRoutePath) {
     return;
   }
@@ -31,10 +39,18 @@
 }
 
 async function fixBaseRoutePathForLocalhost(filePath: string): Promise<void> {
-  const readFile = await fs.promises.open(filePath, 'r');
-  const contents = await readFile.readFile('utf8');
-  let json = JSON.parse(contents);
-  await readFile.close();
+  let readFile, json;
+  try {
+    readFile = await fs.promises.open(filePath, 'r');
+    const contents = await readFile.readFile('utf8');
+    json = JSON.parse(contents);
+  } catch {
+    return;
+  } finally {
+    if (readFile) {
+      await readFile.close();
+    }
+  }
   if (json.baseDomain !== 'http://localhost') {
     return;
   }
diff --git a/keyserver/src/utils/urls.js b/keyserver/src/utils/urls.js
--- a/keyserver/src/utils/urls.js
+++ b/keyserver/src/utils/urls.js
@@ -1,10 +1,8 @@
 // @flow
 
-import { values } from 'lib/utils/objects';
+import invariant from 'invariant';
 
-import commAppURLFacts from '../../facts/commapp_url';
-import landingURLFacts from '../../facts/landing_url';
-import squadCalURLFacts from '../../facts/squadcal_url';
+import { values } from 'lib/utils/objects';
 
 export type AppURLFacts = {
   +baseDomain: string,
@@ -45,22 +43,28 @@
 }
 
 function getSquadCalURLFacts(): AppURLFacts {
-  return squadCalURLFacts;
+  const urlFacts = cachedURLFacts.get('squadcal');
+  invariant(urlFacts, 'keyserver/facts/squadcal_url.json missing');
+  return urlFacts;
 }
 
 function getCommAppURLFacts(): AppURLFacts {
-  return commAppURLFacts;
+  const urlFacts = cachedURLFacts.get('commapp');
+  invariant(urlFacts, 'keyserver/facts/commapp_url.json missing');
+  return urlFacts;
 }
 
 function getAppURLFactsFromRequestURL(url: string): AppURLFacts {
   const commURLFacts = getCommAppURLFacts();
-  return url.startsWith(commURLFacts.baseRoutePath)
+  return commURLFacts && url.startsWith(commURLFacts.baseRoutePath)
     ? commURLFacts
     : getSquadCalURLFacts();
 }
 
 function getLandingURLFacts(): AppURLFacts {
-  return landingURLFacts;
+  const urlFacts = cachedURLFacts.get('landing');
+  invariant(urlFacts, 'keyserver/facts/landing_url.json missing');
+  return urlFacts;
 }
 
 function clientPathFromRouterPath(