diff --git a/application/libraries/FilterCmptLib.php b/application/libraries/FilterCmptLib.php
index 272899de6..b1de89245 100644
--- a/application/libraries/FilterCmptLib.php
+++ b/application/libraries/FilterCmptLib.php
@@ -1,7 +1,7 @@
 <?php
 
 /**
- * Copyright (C) 2022 fhcomplete.org
+ * Copyright (C) 2025 fhcomplete.org
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -177,7 +177,7 @@ class FilterCmptLib
 		$session = $this->getSession();
 
 		// If session is NOT empty -> a filter was already loaded
-		if ($session != null)
+		if (!isError($session) && $session != null)
 		{
 			// Retrieve the filterId stored in the session
 			$sessionFilterId = $this->_getSessionElement(FilterCmptLib::FILTER_ID);
@@ -219,9 +219,7 @@ class FilterCmptLib
 				}
 			}
 		}
-
-		// If the session is empty -> first time that this filter is loaded
-		if ($session == null)
+		else
 		{
 			// Load filter definition data from DB
 			$definition = $this->_loadDefinition(
@@ -602,7 +600,7 @@ class FilterCmptLib
 	{
 		$session = getSessionElement(self::SESSION_NAME, $this->_filterUniqueId);
 
-		if (isset($session[$name]))
+		if (!isError($session) && isset($session[$name]))
 		{
 			return $session[$name];
 		}
@@ -623,7 +621,7 @@ class FilterCmptLib
 
 		if (!$this->_ci->permissionlib->hasAtLeastOne($this->_requiredPermissions, self::PERMISSION_FILTER_METHOD, self::PERMISSION_TYPE))
 		{
-			$this->_setSession(error('The required permission is not help by the logged user'));
+			$this->_setSession(error('The required permission is not held by the logged user'));
 			return false;
 		}
 
@@ -904,7 +902,7 @@ class FilterCmptLib
 		$filterCmptsSession = getSession(self::SESSION_NAME);
 
 		// If something is present in session
-		if ($filterCmptsSession != null)
+		if (!isError($filterCmptsSession) && $filterCmptsSession != null)
 		{
 			// Loops in the session for all the filter components
 			foreach ($filterCmptsSession as $filterCmpt => $filterCmptData)
@@ -951,9 +949,11 @@ class FilterCmptLib
 	{
 		$session = getSessionElement(self::SESSION_NAME, $this->_filterUniqueId);
 
-		$session[$name] = $value;
-
-		setSessionElement(self::SESSION_NAME, $this->_filterUniqueId, $session); // stores the single value
+		if (!isError($session) && $session != null)
+		{
+			$session[$name] = $value;
+			setSessionElement(self::SESSION_NAME, $this->_filterUniqueId, $session); // stores the single value
+		}
 	}
 
 	/**
@@ -965,7 +965,7 @@ class FilterCmptLib
 		$filterCmptsSession = getSession(self::SESSION_NAME);
 
 		// If something is present in session
-		if ($filterCmptsSession != null)
+		if (!isError($filterCmptsSession) && $filterCmptsSession != null)
 		{
 			// Loops in the session for all the filter components
 			foreach ($filterCmptsSession as $filterCmpt => $filterCmptData)
@@ -1174,3 +1174,4 @@ class FilterCmptLib
 		return $filterName;
 	}
 }
+
diff --git a/public/js/plugins/Api.js b/public/js/plugins/Api.js
index 0b8e2fd17..895ecf70d 100644
--- a/public/js/plugins/Api.js
+++ b/public/js/plugins/Api.js
@@ -328,6 +328,7 @@ export default {
 						url: error.request.responseURL
 					}];
 				} else {
+					if (error.response.data.errors == undefined) return [];
 					return error.response.data.errors;
 				}
 			} else if (error.request) {
@@ -346,6 +347,9 @@ export default {
 		function popHandleableErrors(errorHandling, errors) {
 			const result = {};
 			const copy = [];
+
+			if (errors == undefined) return {};
+
 			while (errors.length)
 				copy.push(errors.pop());
 			for (var error of copy) {
@@ -551,4 +555,4 @@ export default {
 
 		app.provide('$api', app.config.globalProperties.$api);
 	}
-};
\ No newline at end of file
+};