diff --git a/website/src/components/ErrorReportInstruction.tsx b/website/src/components/ErrorReportInstruction.tsx
index 9d3a5acb..ade7b059 100644
--- a/website/src/components/ErrorReportInstruction.tsx
+++ b/website/src/components/ErrorReportInstruction.tsx
@@ -1,4 +1,40 @@
 import { useRef, useState } from 'react';
+import { toast } from 'react-toastify';
+import { v4 as uuidv4 } from 'uuid';
+
+import { Modal, useModalRef } from '../styles/containers/Modal.tsx';
+import type { InstanceLogger } from '../types/logMessage.ts';
+
+type ErrorToastArguments = {
+    error: Error;
+    logMessage: string;
+    errorToastMessages: [string, ...string[]];
+};
+
+export function useErrorToast(logger: InstanceLogger) {
+    return {
+        showErrorToast: ({ error, logMessage, errorToastMessages }: ErrorToastArguments) => {
+            const errorId = uuidv4();
+            logger.error(logMessage, {
+                errorId,
+            });
+            toast.error(
+                <>
+                    {errorToastMessages.map((toastMessage, index) => (
+                        <p className='mb-2' key={index}>
+                            {toastMessage}
+                        </p>
+                    ))}
+                    <ErrorReportToastModal errorId={errorId} error={error} />
+                </>,
+                {
+                    position: 'bottom-left',
+                    autoClose: false,
+                },
+            );
+        },
+    };
+}
 
 /**
  * Throw this error if you want to display the error message to the user.
@@ -6,7 +42,7 @@ import { useRef, useState } from 'react';
 export class UserFacingError extends Error {}
 
 export function ErrorReportToastModal({ errorId, error }: { errorId: string; error: Error }) {
-    const modalRef = useRef<HTMLDialogElement>(null);
+    const modalRef = useModalRef();
 
     const openModal = () => {
         if (modalRef.current) {
@@ -23,8 +59,8 @@ export function ErrorReportToastModal({ errorId, error }: { errorId: string; err
                     Help us fix the issue.
                 </button>
             </p>
-            <dialog ref={modalRef} className='modal'>
-                <div className='modal-box'>
+            <Modal modalRef={modalRef} size='large'>
+                <div className='p-8'>
                     <ErrorReportInstruction errorId={errorId} currentUrl={window.location.href} error={error} />
                     <div className='modal-action'>
                         <form method='dialog'>
@@ -32,7 +68,7 @@ export function ErrorReportToastModal({ errorId, error }: { errorId: string; err
                         </form>
                     </div>
                 </div>
-            </dialog>
+            </Modal>
         </>
     );
 }
diff --git a/website/src/components/subscriptions/create/SubscriptionsCreate.tsx b/website/src/components/subscriptions/create/SubscriptionsCreate.tsx
index 3c8e6c90..4a9acc04 100644
--- a/website/src/components/subscriptions/create/SubscriptionsCreate.tsx
+++ b/website/src/components/subscriptions/create/SubscriptionsCreate.tsx
@@ -2,8 +2,6 @@ import '@genspectrum/dashboard-components/components';
 import '@genspectrum/dashboard-components/style.css';
 import { useMutation } from '@tanstack/react-query';
 import { useState } from 'react';
-import { toast } from 'react-toastify';
-import { v4 as uuidv4 } from 'uuid';
 
 import { FilterDisplay } from './FilterDisplay.tsx';
 import { IntervalInput } from './IntervalInput.tsx';
@@ -22,7 +20,7 @@ import { type EvaluationInterval, EvaluationIntervals } from '../../../types/Eva
 import { type Organism, Organisms } from '../../../types/Organism.ts';
 import type { SubscriptionRequest, Trigger } from '../../../types/Subscription.ts';
 import { getErrorLogMessage } from '../../../util/getErrorLogMessage.ts';
-import { ErrorReportToastModal } from '../../ErrorReportInstruction.tsx';
+import { useErrorToast } from '../../ErrorReportInstruction.tsx';
 import { GsApp } from '../../genspectrum/GsApp.tsx';
 import { getBackendServiceForClientside } from '../backendApi/backendService.ts';
 import { withQueryProvider } from '../backendApi/withQueryProvider.tsx';
@@ -42,6 +40,8 @@ export function SubscriptionsCreateInner({
     // TODO: Enable notificationChannels in #82, #128
     // notificationChannels: NotificationChannels;
 }) {
+    const { showErrorToast } = useErrorToast(logger);
+
     const createSubscription = useMutation({
         mutationFn: () =>
             getBackendServiceForClientside().postSubscription({
@@ -49,20 +49,11 @@ export function SubscriptionsCreateInner({
                 userId,
             }),
         onError: (error) => {
-            const errorId = uuidv4();
-            logger.error(`Failed to create a new subscription: ${getErrorLogMessage(error)}`, {
-                errorId,
+            showErrorToast({
+                error,
+                logMessage: `Failed to create a new subscription: ${getErrorLogMessage(error)}`,
+                errorToastMessages: ['We could not create your subscription. Please try again later.'],
             });
-            toast.error(
-                <>
-                    <p className='mb-2'>We could not create your subscription. Please try again later.</p>
-                    <ErrorReportToastModal errorId={errorId} error={error} />
-                </>,
-                {
-                    position: 'bottom-left',
-                    autoClose: false,
-                },
-            );
         },
     });
 
diff --git a/website/src/components/subscriptions/overview/SubscriptionEntry.tsx b/website/src/components/subscriptions/overview/SubscriptionEntry.tsx
index 625e9933..82f330b9 100644
--- a/website/src/components/subscriptions/overview/SubscriptionEntry.tsx
+++ b/website/src/components/subscriptions/overview/SubscriptionEntry.tsx
@@ -1,7 +1,6 @@
 import { useMutation } from '@tanstack/react-query';
 import { type JSX, type RefObject } from 'react';
 import { toast } from 'react-toastify';
-import { v4 as uuidv4 } from 'uuid';
 
 import { SubscriptionDisplay } from './SubscriptionDisplay.tsx';
 import { getClientLogger } from '../../../clientLogger.ts';
@@ -13,7 +12,7 @@ import { ModalHeader } from '../../../styles/containers/ModalHeader.tsx';
 import { organismConfig } from '../../../types/Organism.ts';
 import type { Subscription } from '../../../types/Subscription.ts';
 import { getErrorLogMessage } from '../../../util/getErrorLogMessage.ts';
-import { ErrorReportToastModal } from '../../ErrorReportInstruction.tsx';
+import { useErrorToast } from '../../ErrorReportInstruction.tsx';
 import { getBackendServiceForClientside } from '../backendApi/backendService.ts';
 
 const logger = getClientLogger('SubscriptionEntry');
@@ -102,6 +101,8 @@ function MoreDropdown({
     userId: string;
     refetchSubscriptions: () => void;
 }) {
+    const { showErrorToast } = useErrorToast(logger);
+
     const deleteSubscription = useMutation({
         mutationFn: () =>
             getBackendServiceForClientside().deleteSubscription({
@@ -116,22 +117,13 @@ function MoreDropdown({
             });
         },
         onError: (error) => {
-            const errorId = uuidv4();
-            logger.error(`Failed to delete subscription with id '${subscription.id}': ${getErrorLogMessage(error)}`, {
-                errorId,
+            showErrorToast({
+                error,
+                logMessage: `Failed to delete subscription with id '${subscription.id}': ${getErrorLogMessage(error)}`,
+                errorToastMessages: [
+                    `We could not delete your subscription "${subscription.name}". Please try again later.`,
+                ],
             });
-            toast.error(
-                <>
-                    <p className='mb-2'>
-                        We could not delete your subscription "{subscription.name}". Please try again later.
-                    </p>
-                    <ErrorReportToastModal errorId={errorId} error={error} />
-                </>,
-                {
-                    position: 'bottom-left',
-                    autoClose: false,
-                },
-            );
         },
     });
 
diff --git a/website/src/components/views/analyzeSingleVariant/CollectionsList.tsx b/website/src/components/views/analyzeSingleVariant/CollectionsList.tsx
index 8c6048c6..20b67ff3 100644
--- a/website/src/components/views/analyzeSingleVariant/CollectionsList.tsx
+++ b/website/src/components/views/analyzeSingleVariant/CollectionsList.tsx
@@ -2,9 +2,11 @@ import { useQuery } from '@tanstack/react-query';
 import { useMemo, useState } from 'react';
 import { z } from 'zod';
 
+import { getClientLogger } from '../../../clientLogger.ts';
 import type { OrganismsConfig } from '../../../config.ts';
 import { type CovidVariantData } from '../../../views/covid.ts';
 import { Routing } from '../../../views/routing.ts';
+import { useErrorToast } from '../../ErrorReportInstruction.tsx';
 import { withQueryProvider } from '../../subscriptions/backendApi/withQueryProvider.tsx';
 
 type CollectionVariant = {
@@ -98,14 +100,51 @@ const querySchema = z.object({
 function CollectionVariantList({ collection, organismsConfig }: CollectionVariantListProps) {
     const variants = collection.variants;
 
+    const selectVariant = useSelectVariant(organismsConfig, collection);
+
+    return (
+        <div className='flex flex-col'>
+            {variants.map((variant, index) => (
+                <button
+                    key={`${variant.name}_${variant.query}_${index}`}
+                    className='border bg-white px-4 py-2 hover:bg-cyan'
+                    onClick={() => selectVariant(variant)}
+                >
+                    {variant.name}
+                </button>
+            ))}
+        </div>
+    );
+}
+
+const logger = getClientLogger('CollectionList');
+
+function useSelectVariant(organismsConfig: OrganismsConfig, collection: Collection) {
     const routing = useMemo(() => new Routing(organismsConfig), [organismsConfig]);
 
-    const selectVariant = (variant: CollectionVariant) => {
+    const { showErrorToast } = useErrorToast(logger);
+
+    return (variant: CollectionVariant) => {
         const currentPageState = routing
             .getOrganismView('covid.singleVariantView')
             .pageStateHandler.parsePageStateFromUrl(new URL(window.location.href));
         let newPageState: CovidVariantData;
-        const query = querySchema.parse(JSON.parse(variant.query));
+
+        const queryParseResult = querySchema.safeParse(JSON.parse(variant.query));
+
+        if (!queryParseResult.success) {
+            showErrorToast({
+                error: queryParseResult.error,
+                logMessage: `Failed to parse query of variant ${variant.name} of collection ${collection.id}: ${queryParseResult.error.message}`,
+                errorToastMessages: [
+                    `The variant filter of the collection variant "${variant.name}" seems to be invalid.`,
+                ],
+            });
+            return;
+        }
+
+        const query = queryParseResult.data;
+
         if (query.variantQuery !== undefined) {
             newPageState = {
                 ...currentPageState,
@@ -135,18 +174,4 @@ function CollectionVariantList({ collection, organismsConfig }: CollectionVarian
         }
         window.location.href = routing.getOrganismView('covid.singleVariantView').pageStateHandler.toUrl(newPageState);
     };
-
-    return (
-        <div className='flex flex-col'>
-            {variants.map((variant, index) => (
-                <button
-                    key={`${variant.name}_${variant.query}_${index}`}
-                    className='border bg-white px-4 py-2 hover:bg-cyan'
-                    onClick={() => selectVariant(variant)}
-                >
-                    {variant.name}
-                </button>
-            ))}
-        </div>
-    );
 }
diff --git a/website/src/styles/containers/Modal.tsx b/website/src/styles/containers/Modal.tsx
index 6b9b4c1d..e7b7cd30 100644
--- a/website/src/styles/containers/Modal.tsx
+++ b/website/src/styles/containers/Modal.tsx
@@ -6,7 +6,11 @@ export function useModalRef() {
     return useRef<HTMLDialogElement>(null);
 }
 
-type ModalProps =
+const modalSize = {
+    large: 'max-w-screen-lg',
+};
+
+type ModalProps = (
     | {
           /** set this when using from React and open it via `modalRef.current?.showModal()` */
           modalRef: RefObject<HTMLDialogElement>;
@@ -16,12 +20,15 @@ type ModalProps =
           /** set this when using from Astro and open it via `onclick="id.showModal()"` */
           id: string;
           modalRef?: undefined;
-      };
+      }
+) & {
+    size?: keyof typeof modalSize;
+};
 
-export const Modal: FC<PropsWithChildren<ModalProps>> = ({ children, modalRef, id }) => {
+export const Modal: FC<PropsWithChildren<ModalProps>> = ({ children, modalRef, id, size }) => {
     return (
         <dialog className='modal' ref={modalRef} id={id}>
-            <ModalBox>{children}</ModalBox>
+            <ModalBox className={size !== undefined ? modalSize[size] : ''}>{children}</ModalBox>
             <form method='dialog' className='modal-backdrop'>
                 <button>close on clicking outside of modal</button>
             </form>
diff --git a/website/src/styles/containers/ModalBox.tsx b/website/src/styles/containers/ModalBox.tsx
index edd5e9c4..bd877e9f 100644
--- a/website/src/styles/containers/ModalBox.tsx
+++ b/website/src/styles/containers/ModalBox.tsx
@@ -1,5 +1,5 @@
 import { type PropsWithChildren } from 'react';
 
-export function ModalBox({ children }: PropsWithChildren) {
-    return <div className='modal-box p-0'>{children}</div>;
+export function ModalBox({ children, className }: PropsWithChildren<{ className?: string }>) {
+    return <div className={`modal-box p-0 ${className ?? ''}`}>{children}</div>;
 }