diff --git a/packages/frontend/src/pages/admin-file.root.vue b/packages/frontend/src/pages/admin-file.root.vue
new file mode 100644
index 0000000000..211d552d1b
--- /dev/null
+++ b/packages/frontend/src/pages/admin-file.root.vue
@@ -0,0 +1,182 @@
+<!--
+SPDX-FileCopyrightText: syuilo and misskey-project
+SPDX-License-Identifier: AGPL-3.0-only
+-->
+
+<template>
+<PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs">
+	<div v-if="file" class="_spacer" style="--MI_SPACER-w: 600px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
+		<div v-if="tab === 'overview'" class="cxqhhsmd _gaps_m">
+			<a class="thumbnail" :href="file.url" target="_blank">
+				<MkDriveFileThumbnail class="thumbnail" :file="file" fit="contain"/>
+			</a>
+			<div>
+				<MkKeyValue :copy="file.type" oneline style="margin: 1em 0;">
+					<template #key>MIME Type</template>
+					<template #value><span class="_monospace">{{ file.type }}</span></template>
+				</MkKeyValue>
+				<MkKeyValue oneline style="margin: 1em 0;">
+					<template #key>Size</template>
+					<template #value><span class="_monospace">{{ bytes(file.size) }}</span></template>
+				</MkKeyValue>
+				<MkKeyValue :copy="file.id" oneline style="margin: 1em 0;">
+					<template #key>ID</template>
+					<template #value><span class="_monospace">{{ file.id }}</span></template>
+				</MkKeyValue>
+				<MkKeyValue :copy="file.md5" oneline style="margin: 1em 0;">
+					<template #key>MD5</template>
+					<template #value><span class="_monospace">{{ file.md5 }}</span></template>
+				</MkKeyValue>
+				<MkKeyValue oneline style="margin: 1em 0;">
+					<template #key>{{ i18n.ts.createdAt }}</template>
+					<template #value><span class="_monospace"><MkTime :time="file.createdAt" mode="detail" style="display: block;"/></span></template>
+				</MkKeyValue>
+			</div>
+			<MkA v-if="file.user" class="user" :to="`/admin/user/${file.user.id}`">
+				<MkUserCardMini :user="file.user"/>
+			</MkA>
+
+			<div>
+				<MkSwitch :modelValue="isSensitive" @update:modelValue="toggleSensitive">{{ i18n.ts.sensitive }}</MkSwitch>
+			</div>
+
+			<div>
+				<MkButton danger @click="del"><i class="ti ti-trash"></i> {{ i18n.ts.delete }}</MkButton>
+			</div>
+		</div>
+		<div v-else-if="tab === 'usage' && info" class="_gaps_m">
+			<MkTabs
+				v-model:tab="usageTab"
+				:tabs="[{
+					key: 'note',
+					title: 'Note',
+				}, {
+					key: 'chat',
+					title: 'Chat',
+				}]"
+			/>
+			<XNotes v-if="usageTab === 'note'" :fileId="props.file.id"/>
+			<XChat v-else-if="usageTab === 'chat'" :fileId="props.file.id"/>
+		</div>
+		<div v-else-if="tab === 'ip' && info" class="_gaps_m">
+			<MkInfo v-if="!iAmAdmin" warn>{{ i18n.ts.requireAdminForView }}</MkInfo>
+			<MkKeyValue v-if="info.requestIp" class="_monospace" :copy="info.requestIp" oneline>
+				<template #key>IP</template>
+				<template #value>{{ info.requestIp }}</template>
+			</MkKeyValue>
+			<FormSection v-if="info.requestHeaders">
+				<template #label>Headers</template>
+				<MkKeyValue v-for="(v, k) in info.requestHeaders" :key="k" class="_monospace">
+					<template #key>{{ k }}</template>
+					<template #value>{{ v }}</template>
+				</MkKeyValue>
+			</FormSection>
+		</div>
+		<div v-else-if="tab === 'raw'" class="_gaps_m">
+			<MkObjectView v-if="info" tall :value="info">
+			</MkObjectView>
+		</div>
+	</div>
+</PageWithHeader>
+</template>
+
+<script lang="ts" setup>
+import { computed, defineAsyncComponent, ref } from 'vue';
+import * as Misskey from 'misskey-js';
+import MkButton from '@/components/MkButton.vue';
+import MkSwitch from '@/components/MkSwitch.vue';
+import MkObjectView from '@/components/MkObjectView.vue';
+import MkDriveFileThumbnail from '@/components/MkDriveFileThumbnail.vue';
+import MkKeyValue from '@/components/MkKeyValue.vue';
+import FormSection from '@/components/form/section.vue';
+import MkUserCardMini from '@/components/MkUserCardMini.vue';
+import MkInfo from '@/components/MkInfo.vue';
+import bytes from '@/filters/bytes.js';
+import * as os from '@/os.js';
+import { i18n } from '@/i18n.js';
+import { iAmAdmin, iAmModerator } from '@/i.js';
+import MkTabs from '@/components/MkTabs.vue';
+
+const props = defineProps<{
+	file: Misskey.entities.DriveFile,
+	info: Misskey.entities.AdminDriveShowFileResponse,
+}>();
+
+const tab = ref('overview');
+const isSensitive = ref(props.file.isSensitive);
+const usageTab = ref<'note' | 'chat'>('note');
+const XNotes = defineAsyncComponent(() => import('./drive.file.notes.vue'));
+const XChat = defineAsyncComponent(() => import('./admin-file.chat.vue'));
+
+async function del() {
+	const { canceled } = await os.confirm({
+		type: 'warning',
+		text: i18n.tsx.removeAreYouSure({ x: props.file.name }),
+	});
+	if (canceled) return;
+
+	os.apiWithDialog('drive/files/delete', {
+		fileId: props.file.id,
+	});
+}
+
+async function toggleSensitive() {
+	const { canceled } = await os.confirm({
+		type: 'warning',
+		text: isSensitive.value ? i18n.ts.unmarkAsSensitiveConfirm : i18n.ts.markAsSensitiveConfirm,
+	});
+
+	if (canceled) return;
+	isSensitive.value = !isSensitive.value;
+
+	os.apiWithDialog('drive/files/update', {
+		fileId: props.file.id,
+		isSensitive: !props.file.isSensitive,
+	});
+}
+
+const headerActions = computed(() => [{
+	text: i18n.ts.openInNewTab,
+	icon: 'ti ti-external-link',
+	handler: () => {
+		window.open(props.file.url, '_blank', 'noopener');
+	},
+}]);
+
+const headerTabs = computed(() => [{
+	key: 'overview',
+	title: i18n.ts.overview,
+	icon: 'ti ti-info-circle',
+}, iAmModerator ? {
+	key: 'usage',
+	title: i18n.ts._fileViewer.usage,
+	icon: 'ti ti-plus',
+} : null, iAmModerator ? {
+	key: 'ip',
+	title: 'IP',
+	icon: 'ti ti-password',
+} : null, {
+	key: 'raw',
+	title: 'Raw data',
+	icon: 'ti ti-code',
+}].filter(x => x != null));
+</script>
+
+<style lang="scss" scoped>
+.cxqhhsmd {
+	> .thumbnail {
+		display: block;
+
+		> .thumbnail {
+			height: 300px;
+			max-width: 100%;
+		}
+	}
+
+	> .user {
+		&:hover {
+			text-decoration: none;
+		}
+	}
+}
+</style>
diff --git a/packages/frontend/src/pages/admin-file.vue b/packages/frontend/src/pages/admin-file.vue
index 052829ffe2..63d3640f9c 100644
--- a/packages/frontend/src/pages/admin-file.vue
+++ b/packages/frontend/src/pages/admin-file.vue
@@ -4,197 +4,43 @@ SPDX-License-Identifier: AGPL-3.0-only
 -->
 
 <template>
-<PageWithHeader v-model:tab="tab" :actions="headerActions" :tabs="headerTabs">
-	<div v-if="file" class="_spacer" style="--MI_SPACER-w: 600px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
-		<div v-if="tab === 'overview'" class="cxqhhsmd _gaps_m">
-			<a class="thumbnail" :href="file.url" target="_blank">
-				<MkDriveFileThumbnail class="thumbnail" :file="file" fit="contain"/>
-			</a>
-			<div>
-				<MkKeyValue :copy="file.type" oneline style="margin: 1em 0;">
-					<template #key>MIME Type</template>
-					<template #value><span class="_monospace">{{ file.type }}</span></template>
-				</MkKeyValue>
-				<MkKeyValue oneline style="margin: 1em 0;">
-					<template #key>Size</template>
-					<template #value><span class="_monospace">{{ bytes(file.size) }}</span></template>
-				</MkKeyValue>
-				<MkKeyValue :copy="file.id" oneline style="margin: 1em 0;">
-					<template #key>ID</template>
-					<template #value><span class="_monospace">{{ file.id }}</span></template>
-				</MkKeyValue>
-				<MkKeyValue :copy="file.md5" oneline style="margin: 1em 0;">
-					<template #key>MD5</template>
-					<template #value><span class="_monospace">{{ file.md5 }}</span></template>
-				</MkKeyValue>
-				<MkKeyValue oneline style="margin: 1em 0;">
-					<template #key>{{ i18n.ts.createdAt }}</template>
-					<template #value><span class="_monospace"><MkTime :time="file.createdAt" mode="detail" style="display: block;"/></span></template>
-				</MkKeyValue>
-			</div>
-			<MkA v-if="file.user" class="user" :to="`/admin/user/${file.user.id}`">
-				<MkUserCardMini :user="file.user"/>
-			</MkA>
-
-			<div>
-				<MkSwitch :modelValue="isSensitive" @update:modelValue="toggleSensitive">{{ i18n.ts.sensitive }}</MkSwitch>
-			</div>
-
-			<div>
-				<MkButton danger @click="del"><i class="ti ti-trash"></i> {{ i18n.ts.delete }}</MkButton>
-			</div>
-		</div>
-		<div v-else-if="tab === 'usage' && info" class="_gaps_m">
-			<MkTabs
-				v-model:tab="usageTab"
-				:tabs="[{
-					key: 'note',
-					title: 'Note',
-				}, {
-					key: 'chat',
-					title: 'Chat',
-				}]"
-			/>
-			<XNotes v-if="usageTab === 'note'" :fileId="fileId"/>
-			<XChat v-else-if="usageTab === 'chat'" :fileId="fileId"/>
-		</div>
-		<div v-else-if="tab === 'ip' && info" class="_gaps_m">
-			<MkInfo v-if="!iAmAdmin" warn>{{ i18n.ts.requireAdminForView }}</MkInfo>
-			<MkKeyValue v-if="info.requestIp" class="_monospace" :copy="info.requestIp" oneline>
-				<template #key>IP</template>
-				<template #value>{{ info.requestIp }}</template>
-			</MkKeyValue>
-			<FormSection v-if="info.requestHeaders">
-				<template #label>Headers</template>
-				<MkKeyValue v-for="(v, k) in info.requestHeaders" :key="k" class="_monospace">
-					<template #key>{{ k }}</template>
-					<template #value>{{ v }}</template>
-				</MkKeyValue>
-			</FormSection>
-		</div>
-		<div v-else-if="tab === 'raw'" class="_gaps_m">
-			<MkObjectView v-if="info" tall :value="info">
-			</MkObjectView>
-		</div>
-	</div>
-</PageWithHeader>
+<XRoot v-if="file != null && info != null" :file="file" :info="info"/>
+<div v-else-if="error != null">Error: {{ error }}</div>
+<MkLoading v-else/>
 </template>
 
 <script lang="ts" setup>
-import { computed, defineAsyncComponent, ref } from 'vue';
+import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
-import MkButton from '@/components/MkButton.vue';
-import MkSwitch from '@/components/MkSwitch.vue';
-import MkObjectView from '@/components/MkObjectView.vue';
-import MkDriveFileThumbnail from '@/components/MkDriveFileThumbnail.vue';
-import MkKeyValue from '@/components/MkKeyValue.vue';
-import FormSection from '@/components/form/section.vue';
-import MkUserCardMini from '@/components/MkUserCardMini.vue';
-import MkInfo from '@/components/MkInfo.vue';
-import bytes from '@/filters/bytes.js';
-import * as os from '@/os.js';
+import XRoot from './admin-file.root.vue';
 import { misskeyApi } from '@/utility/misskey-api.js';
 import { i18n } from '@/i18n.js';
 import { definePage } from '@/page.js';
-import { iAmAdmin, iAmModerator } from '@/i.js';
-import MkTabs from '@/components/MkTabs.vue';
 
-const tab = ref('overview');
 const file = ref<Misskey.entities.DriveFile | null>(null);
 const info = ref<Misskey.entities.AdminDriveShowFileResponse | null>(null);
-const isSensitive = ref<boolean>(false);
-const usageTab = ref<'note' | 'chat'>('note');
-const XNotes = defineAsyncComponent(() => import('./drive.file.notes.vue'));
-const XChat = defineAsyncComponent(() => import('./admin-file.chat.vue'));
+
+const error = ref<string | null>(null);
 
 const props = defineProps<{
 	fileId: string,
 }>();
 
 async function _fetch_() {
-	file.value = await misskeyApi('drive/files/show', { fileId: props.fileId });
+	try {
+		file.value = await misskeyApi('drive/files/show', { fileId: props.fileId });
+	} catch (err: any) {
+		error.value = err.message + ' ' + err.id;
+		return;
+	}
+
 	info.value = await misskeyApi('admin/drive/show-file', { fileId: props.fileId });
-	isSensitive.value = file.value.isSensitive;
 }
 
 _fetch_();
 
-async function del() {
-	const { canceled } = await os.confirm({
-		type: 'warning',
-		text: i18n.tsx.removeAreYouSure({ x: file.value.name }),
-	});
-	if (canceled) return;
-
-	os.apiWithDialog('drive/files/delete', {
-		fileId: file.value.id,
-	});
-}
-
-async function toggleSensitive() {
-	if (!file.value) return;
-
-	const { canceled } = await os.confirm({
-		type: 'warning',
-		text: isSensitive.value ? i18n.ts.unmarkAsSensitiveConfirm : i18n.ts.markAsSensitiveConfirm,
-	});
-
-	if (canceled) return;
-	isSensitive.value = !isSensitive.value;
-
-	os.apiWithDialog('drive/files/update', {
-		fileId: file.value.id,
-		isSensitive: !file.value.isSensitive,
-	});
-}
-
-const headerActions = computed(() => [{
-	text: i18n.ts.openInNewTab,
-	icon: 'ti ti-external-link',
-	handler: () => {
-		window.open(file.value.url, '_blank', 'noopener');
-	},
-}]);
-
-const headerTabs = computed(() => [{
-	key: 'overview',
-	title: i18n.ts.overview,
-	icon: 'ti ti-info-circle',
-}, iAmModerator ? {
-	key: 'usage',
-	title: i18n.ts._fileViewer.usage,
-	icon: 'ti ti-plus',
-} : null, iAmModerator ? {
-	key: 'ip',
-	title: 'IP',
-	icon: 'ti ti-password',
-} : null, {
-	key: 'raw',
-	title: 'Raw data',
-	icon: 'ti ti-code',
-}].filter(x => x != null));
-
 definePage(() => ({
 	title: file.value ? `${i18n.ts.file}: ${file.value.name}` : i18n.ts.file,
 	icon: 'ti ti-file',
 }));
 </script>
-
-<style lang="scss" scoped>
-.cxqhhsmd {
-	> .thumbnail {
-		display: block;
-
-		> .thumbnail {
-			height: 300px;
-			max-width: 100%;
-		}
-	}
-
-	> .user {
-		&:hover {
-			text-decoration: none;
-		}
-	}
-}
-</style>