diff --git a/package-lock.json b/package-lock.json
index f2ccb66..86e6b91 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "foris",
-  "version": "3.4.0",
+  "version": "4.0.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 531f7df..59b19b5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "foris",
-  "version": "3.4.0",
+  "version": "4.0.0",
   "description": "Set of components and utils for Foris and its plugins.",
   "author": "CZ.NIC, z.s.p.o.",
   "repository": {
diff --git a/src/api/hooks.js b/src/api/hooks.js
index 05503ae..1b245af 100644
--- a/src/api/hooks.js
+++ b/src/api/hooks.js
@@ -53,10 +53,11 @@ function createAPIHook(method) {
                     payload: result.data,
                 });
             } catch (error) {
+                const errorPayload = getErrorPayload(error);
                 dispatch({
                     type: API_ACTIONS.FAILURE,
                     status: error.response && error.response.status,
-                    payload: getErrorPayload(error),
+                    payload: errorPayload,
                 });
             }
         }, [urlRoot, contentType]);
@@ -80,6 +81,12 @@ function APIReducer(state, action) {
         if (action.status === 403) {
             window.location.assign(ForisURLs.login);
         }
+
+        // Not an API error - should be rethrown.
+        if (action.payload && action.payload.stack && action.payload.message) {
+            throw (action.payload);
+        }
+
         return {
             state: API_STATE.ERROR,
             data: action.payload,
diff --git a/src/api/utils.js b/src/api/utils.js
index 9da04a0..c8e340c 100644
--- a/src/api/utils.js
+++ b/src/api/utils.js
@@ -65,9 +65,8 @@ export function getErrorPayload(error) {
     if (error.request) {
         return _("No response received.");
     }
-    /* eslint no-console: "off" */
-    console.error(error);
-    return _("An unknown error occurred. Check the console for more info.");
+    // Return original error because it's not directly related to API request/response.
+    return error;
 }
 
 export function getJSONErrorMessage(error) {