diff --git a/package.json b/package.json
index 329b95e55..4fc01f71b 100644
--- a/package.json
+++ b/package.json
@@ -135,7 +135,7 @@
     "mime-types": "^2.1.35",
     "mobx": "^4.15.4",
     "mobx-react": "^6.3.1",
-    "mobx-utils": "^6.0.5",
+    "mobx-utils": "^4.0.1",
     "natural-sort": "^1.0.0",
     "node-fetch": "2.6.7",
     "node-htmldiff": "^0.9.4",
diff --git a/server/routes/api/documents.ts b/server/routes/api/documents.ts
index 6aea0b7a2..ab027e222 100644
--- a/server/routes/api/documents.ts
+++ b/server/routes/api/documents.ts
@@ -1068,9 +1068,12 @@ router.post("documents.import", auth(), async (ctx) => {
     throw InvalidRequestError("Request type must be multipart/form-data");
   }
 
-  // @ts-expect-error ts-migrate(2769) FIXME: No overload matches this call.
-  const file = Object.values(ctx.request.files)[0];
-  assertPresent(file, "file is required");
+  const file = ctx.request.files
+    ? Object.values(ctx.request.files)[0]
+    : undefined;
+  if (!file) {
+    throw InvalidRequestError("Request must include a file parameter");
+  }
 
   if (env.MAXIMUM_IMPORT_SIZE && file.size > env.MAXIMUM_IMPORT_SIZE) {
     throw InvalidRequestError(
diff --git a/yarn.lock b/yarn.lock
index 2bc868a22..382431157 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -10968,10 +10968,10 @@ mobx-react@^6.3.1:
   dependencies:
     mobx-react-lite "^2.2.0"
 
-mobx-utils@^6.0.5:
-  version "6.0.5"
-  resolved "https://registry.yarnpkg.com/mobx-utils/-/mobx-utils-6.0.5.tgz#0cce9afb07fbba1fb559f959f8cea1f44baa7252"
-  integrity sha512-QOduwicYedD4mwYZRl8+c3BalljFDcubg+PUGqBkn8tOuBoj2q7GhjXBP6JXM9J+Zh+2mePK8IoToeLfqr3Z/w==
+mobx-utils@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/mobx-utils/-/mobx-utils-4.0.1.tgz#1bd8648332be7ca83d7023aaa0ba24bbf389a300"
+  integrity sha512-hWYLNJNBoGY/iQbQuOzYkUsTGArpTTutrXaQQrXvxBMefDwhWyNHr7bx/g7syf6KQ1f6aKzgQICqC+zXSvGzJQ==
 
 mobx@^4.15.4:
   version "4.15.7"