diff --git a/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/exceptions/QBadRequestException.java b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/exceptions/QBadRequestException.java
new file mode 100644
index 00000000..164f6785
--- /dev/null
+++ b/qqq-backend-core/src/main/java/com/kingsrook/qqq/backend/core/exceptions/QBadRequestException.java
@@ -0,0 +1,53 @@
+/*
+ * QQQ - Low-code Application Framework for Engineers.
+ * Copyright (C) 2021-2022.  Kingsrook, LLC
+ * 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
+ * contact@kingsrook.com
+ * https://github.com/Kingsrook/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.kingsrook.qqq.backend.core.exceptions;
+
+
+/*******************************************************************************
+ ** User-facing exception for when user provided bad or missing data in their request
+ **
+ *******************************************************************************/
+public class QBadRequestException extends QUserFacingException
+{
+
+
+   /*******************************************************************************
+    ** Constructor of message
+    **
+    *******************************************************************************/
+   public QBadRequestException(String message)
+   {
+      super(message);
+   }
+
+
+
+   /*******************************************************************************
+    ** Constructor of message & cause
+    **
+    *******************************************************************************/
+   public QBadRequestException(String message, Throwable cause)
+   {
+      super(message, cause);
+   }
+
+}
diff --git a/qqq-middleware-javalin/src/main/java/com/kingsrook/qqq/backend/javalin/QJavalinImplementation.java b/qqq-middleware-javalin/src/main/java/com/kingsrook/qqq/backend/javalin/QJavalinImplementation.java
index 30a43f0b..b6960752 100644
--- a/qqq-middleware-javalin/src/main/java/com/kingsrook/qqq/backend/javalin/QJavalinImplementation.java
+++ b/qqq-middleware-javalin/src/main/java/com/kingsrook/qqq/backend/javalin/QJavalinImplementation.java
@@ -57,6 +57,7 @@ import com.kingsrook.qqq.backend.core.actions.values.SearchPossibleValueSourceAc
 import com.kingsrook.qqq.backend.core.adapters.QInstanceAdapter;
 import com.kingsrook.qqq.backend.core.context.QContext;
 import com.kingsrook.qqq.backend.core.exceptions.QAuthenticationException;
+import com.kingsrook.qqq.backend.core.exceptions.QBadRequestException;
 import com.kingsrook.qqq.backend.core.exceptions.QException;
 import com.kingsrook.qqq.backend.core.exceptions.QInstanceValidationException;
 import com.kingsrook.qqq.backend.core.exceptions.QModuleDispatchException;
@@ -1419,6 +1420,11 @@ public class QJavalinImplementation
             statusCode = Objects.requireNonNullElse(statusCode, HttpStatus.Code.NOT_FOUND); // 404
             respondWithError(context, statusCode, userFacingException.getMessage());
          }
+         else if(userFacingException instanceof QBadRequestException)
+         {
+            statusCode = Objects.requireNonNullElse(statusCode, HttpStatus.Code.BAD_REQUEST); // 400
+            respondWithError(context, statusCode, userFacingException.getMessage());
+         }
          else
          {
             LOG.info("User-facing exception", e);
diff --git a/qqq-middleware-javalin/src/main/java/com/kingsrook/qqq/backend/javalin/QJavalinProcessHandler.java b/qqq-middleware-javalin/src/main/java/com/kingsrook/qqq/backend/javalin/QJavalinProcessHandler.java
index 84176d7a..941c9f24 100644
--- a/qqq-middleware-javalin/src/main/java/com/kingsrook/qqq/backend/javalin/QJavalinProcessHandler.java
+++ b/qqq-middleware-javalin/src/main/java/com/kingsrook/qqq/backend/javalin/QJavalinProcessHandler.java
@@ -50,6 +50,7 @@ import com.kingsrook.qqq.backend.core.actions.processes.RunProcessAction;
 import com.kingsrook.qqq.backend.core.actions.reporting.GenerateReportAction;
 import com.kingsrook.qqq.backend.core.actions.tables.InsertAction;
 import com.kingsrook.qqq.backend.core.actions.values.QValueFormatter;
+import com.kingsrook.qqq.backend.core.exceptions.QBadRequestException;
 import com.kingsrook.qqq.backend.core.exceptions.QNotFoundException;
 import com.kingsrook.qqq.backend.core.exceptions.QPermissionDeniedException;
 import com.kingsrook.qqq.backend.core.exceptions.QUserFacingException;
@@ -280,7 +281,13 @@ public class QJavalinProcessHandler
          QJavalinImplementation.setupSession(context, new AbstractActionInput());
          // todo context.contentType(reportFormat.getMimeType());
          context.header("Content-Disposition", "filename=" + context.pathParam("file"));
-         context.result(new FileInputStream(context.queryParam("filePath")));
+
+         String filePath = context.queryParam("filePath");
+         if(filePath == null)
+         {
+            throw (new QBadRequestException("A filePath was not provided."));
+         }
+         context.result(new FileInputStream(filePath));
       }
       catch(Exception e)
       {
diff --git a/qqq-middleware-javalin/src/test/java/com/kingsrook/qqq/backend/javalin/QJavalinImplementationTest.java b/qqq-middleware-javalin/src/test/java/com/kingsrook/qqq/backend/javalin/QJavalinImplementationTest.java
index 0fa2e777..ad6c1729 100644
--- a/qqq-middleware-javalin/src/test/java/com/kingsrook/qqq/backend/javalin/QJavalinImplementationTest.java
+++ b/qqq-middleware-javalin/src/test/java/com/kingsrook/qqq/backend/javalin/QJavalinImplementationTest.java
@@ -82,6 +82,25 @@ class QJavalinImplementationTest extends QJavalinTestBase
 
 
 
+   /*******************************************************************************
+    ** test getting serverInfo
+    **
+    *******************************************************************************/
+   @Test
+   public void test_serverInfo()
+   {
+      HttpResponse<String> response = Unirest.get(BASE_URL + "/serverInfo").asString();
+
+      assertEquals(200, response.getStatus());
+      JSONObject jsonObject = JsonUtils.toJSONObject(response.getBody());
+      assertTrue(jsonObject.has("startTimeMillis"));
+      assertTrue(jsonObject.has("startTimeHuman"));
+      assertTrue(jsonObject.has("uptimeHuman"));
+      assertTrue(jsonObject.has("uptimeMillis"));
+   }
+
+
+
    /*******************************************************************************
     ** test the table-level meta-data endpoint
     **
diff --git a/qqq-middleware-javalin/src/test/java/com/kingsrook/qqq/backend/javalin/QJavalinProcessHandlerTest.java b/qqq-middleware-javalin/src/test/java/com/kingsrook/qqq/backend/javalin/QJavalinProcessHandlerTest.java
index 162dacc9..cd25dee2 100644
--- a/qqq-middleware-javalin/src/test/java/com/kingsrook/qqq/backend/javalin/QJavalinProcessHandlerTest.java
+++ b/qqq-middleware-javalin/src/test/java/com/kingsrook/qqq/backend/javalin/QJavalinProcessHandlerTest.java
@@ -560,6 +560,34 @@ class QJavalinProcessHandlerTest extends QJavalinTestBase
 
 
 
+   /*******************************************************************************
+    ** test calling download file endpoint
+    **
+    *******************************************************************************/
+   @Test
+   public void test_downloadFile()
+   {
+      HttpResponse<String> response = Unirest.get(BASE_URL + "/download/myTestFile.txt?filePath=/dev/null").asString();
+      assertEquals(200, response.getStatus());
+      assertEquals("OK", response.getStatusText());
+   }
+
+
+
+   /*******************************************************************************
+    ** test calling download file with missing filePath
+    **
+    *******************************************************************************/
+   @Test
+   public void test_downloadFileMissingFilePath()
+   {
+      HttpResponse<String> response = Unirest.get(BASE_URL + "/download/myTestFile.txt").asString();
+      assertEquals(400, response.getStatus());
+      assertTrue(response.getBody().contains("A filePath was not provided"));
+   }
+
+
+
    /*******************************************************************************
     ** test calling for possibleValue
     **
@@ -576,4 +604,4 @@ class QJavalinProcessHandlerTest extends QJavalinTestBase
       assertEquals(1, jsonObject.getJSONArray("options").getJSONObject(0).getInt("id"));
       assertEquals("Darin Kelkhoff (1)", jsonObject.getJSONArray("options").getJSONObject(0).getString("label"));
    }
-}
\ No newline at end of file
+}