diff --git a/packages/backend/src/core/chart/charts/test-grouped.ts b/packages/backend/src/core/chart/charts/test-grouped.ts
index 500e85f9f0afc268183f3fdfc34055021d154f79..bc215f39420be439d8513faabffb0798934a62a5 100644
--- a/packages/backend/src/core/chart/charts/test-grouped.ts
+++ b/packages/backend/src/core/chart/charts/test-grouped.ts
@@ -20,7 +20,7 @@ export default class TestGroupedChart extends Chart<typeof schema> {
 		private db: DataSource,
 
 		private appLockService: AppLockService,
-		private logger: Logger,
+		logger: Logger,
 	) {
 		super(db, (k) => appLockService.getChartInsertLock(k), logger, name, schema, true);
 	}
diff --git a/packages/backend/src/core/chart/charts/test-intersection.ts b/packages/backend/src/core/chart/charts/test-intersection.ts
index ff63e9976bea3e8ab6899931411ee183a96b7f3c..a074a7ddedd705ade64d8505e3d5eba53dcfdc5f 100644
--- a/packages/backend/src/core/chart/charts/test-intersection.ts
+++ b/packages/backend/src/core/chart/charts/test-intersection.ts
@@ -18,7 +18,7 @@ export default class TestIntersectionChart extends Chart<typeof schema> {
 		private db: DataSource,
 
 		private appLockService: AppLockService,
-		private logger: Logger,
+		logger: Logger,
 	) {
 		super(db, (k) => appLockService.getChartInsertLock(k), logger, name, schema);
 	}
diff --git a/packages/backend/src/core/chart/charts/test-unique.ts b/packages/backend/src/core/chart/charts/test-unique.ts
index 3be4b0df2b4d942a3937431ca607601cac0f839e..4d3e2f240310ec5745a3790e8be96570e9114c14 100644
--- a/packages/backend/src/core/chart/charts/test-unique.ts
+++ b/packages/backend/src/core/chart/charts/test-unique.ts
@@ -18,7 +18,7 @@ export default class TestUniqueChart extends Chart<typeof schema> {
 		private db: DataSource,
 
 		private appLockService: AppLockService,
-		private logger: Logger,
+		logger: Logger,
 	) {
 		super(db, (k) => appLockService.getChartInsertLock(k), logger, name, schema);
 	}
diff --git a/packages/backend/src/core/chart/charts/test.ts b/packages/backend/src/core/chart/charts/test.ts
index 89f64c4c1dfeb6fc3ddd3ba36a9157aa27bc2a4e..72caf79e0fd3e68a315fcf709c6b2b767a19d060 100644
--- a/packages/backend/src/core/chart/charts/test.ts
+++ b/packages/backend/src/core/chart/charts/test.ts
@@ -20,7 +20,7 @@ export default class TestChart extends Chart<typeof schema> {
 		private db: DataSource,
 
 		private appLockService: AppLockService,
-		private logger: Logger,
+		logger: Logger,
 	) {
 		super(db, (k) => appLockService.getChartInsertLock(k), logger, name, schema);
 	}
diff --git a/packages/backend/src/core/entities/GalleryLikeEntityService.ts b/packages/backend/src/core/entities/GalleryLikeEntityService.ts
index bf7c2b7f8d5bdc8f3666626af1991191c5d17a3a..7e599113cc6c1088cd922ab7862dfac350134776 100644
--- a/packages/backend/src/core/entities/GalleryLikeEntityService.ts
+++ b/packages/backend/src/core/entities/GalleryLikeEntityService.ts
@@ -1,6 +1,6 @@
 import { Inject, Injectable } from '@nestjs/common';
 import { DI } from '@/di-symbols.js';
-import type { GalleryPosts, GalleryLikesRepository } from '@/models/index.js';
+import type { GalleryLikesRepository } from '@/models/index.js';
 import { awaitAll } from '@/misc/prelude/await-all.js';
 import type { Packed } from '@/misc/schema.js';
 import type { } from '@/models/entities/Blocking.js';
diff --git a/packages/backend/src/core/remote/activitypub/ApInboxService.ts b/packages/backend/src/core/remote/activitypub/ApInboxService.ts
index 7525aa8d479b04f0ceecd9c8375e20dfa8dd7e8f..baeeb1ad3e631ff18de074bc85060a239ccd426e 100644
--- a/packages/backend/src/core/remote/activitypub/ApInboxService.ts
+++ b/packages/backend/src/core/remote/activitypub/ApInboxService.ts
@@ -295,8 +295,9 @@ export class ApInboxService {
 			let renote;
 			try {
 				renote = await this.apNoteService.resolveNote(targetUri);
+				if (renote == null) throw new Error('announce target is null');
 			} catch (err) {
-			// 対象が4xxならスキップ
+				// 対象が4xxならスキップ
 				if (err instanceof StatusError) {
 					if (err.isClientError) {
 						this.logger.warn(`Ignored announce target ${targetUri} - ${err.statusCode}`);
@@ -308,7 +309,10 @@ export class ApInboxService {
 				throw err;
 			}
 
-			if (!await this.noteEntityService.isVisibleForMe(renote, actor.id)) return 'skip: invalid actor for this activity';
+			if (!await this.noteEntityService.isVisibleForMe(renote, actor.id)) {
+				this.logger.warn('skip: invalid actor for this activity');
+				return;
+			}
 
 			this.logger.info(`Creating the (Re)Note: ${uri}`);
 
diff --git a/packages/backend/src/core/remote/activitypub/ApRendererService.ts b/packages/backend/src/core/remote/activitypub/ApRendererService.ts
index cf10c83f390917a65e1c9bf5c31c946da364b883..a401b7424f10729dfb5918562615e65ee107c4d8 100644
--- a/packages/backend/src/core/remote/activitypub/ApRendererService.ts
+++ b/packages/backend/src/core/remote/activitypub/ApRendererService.ts
@@ -243,7 +243,7 @@ export class ApRendererService {
 		};
 	}
 
-	public async renderLike(noteReaction: NoteReaction, note: Note) {
+	public async renderLike(noteReaction: NoteReaction, note: { uri: string | null }) {
 		const reaction = noteReaction.reaction;
 
 		const object = {
diff --git a/packages/backend/src/core/remote/activitypub/ApResolverService.ts b/packages/backend/src/core/remote/activitypub/ApResolverService.ts
index e2d6a7737055cce2611a36b1308498c61c661629..fe57c82ccc89a3c9ac0112cfb88ad497729c68e5 100644
--- a/packages/backend/src/core/remote/activitypub/ApResolverService.ts
+++ b/packages/backend/src/core/remote/activitypub/ApResolverService.ts
@@ -156,8 +156,8 @@ export class Resolver {
 				return this.notesRepository.findOneByOrFail({ id: parsed.id })
 					.then(note => {
 						if (parsed.rest === 'activity') {
-						// this refers to the create activity and not the note itself
-							return this.apRendererService.renderActivity(this.apRendererService.renderCreate(this.apRendererService.renderNote(note)));
+							// this refers to the create activity and not the note itself
+							return this.apRendererService.renderActivity(this.apRendererService.renderCreate(this.apRendererService.renderNote(note), note));
 						} else {
 							return this.apRendererService.renderNote(note);
 						}
@@ -174,7 +174,7 @@ export class Resolver {
 					.then(([note, poll]) => this.apRendererService.renderQuestion({ id: note.userId }, note, poll));
 			case 'likes':
 				return this.noteReactionsRepository.findOneByOrFail({ id: parsed.id }).then(reaction =>
-					this.apRendererService.renderActivity(this.apRendererService.renderLike(reaction, { uri: null })));
+					this.apRendererService.renderActivity(this.apRendererService.renderLike(reaction, { uri: null }))!);
 			case 'follows':
 				// rest should be <followee id>
 				if (parsed.rest == null || !/^\w+$/.test(parsed.rest)) throw new Error('resolveLocal: invalid follow URI');
@@ -184,7 +184,7 @@ export class Resolver {
 				)
 					.then(([follower, followee]) => this.apRendererService.renderActivity(this.apRendererService.renderFollow(follower, followee, url)));
 			default:
-				throw new Error(`resolveLocal: type ${type} unhandled`);
+				throw new Error(`resolveLocal: type ${parsed.type} unhandled`);
 		}
 	}
 }
diff --git a/packages/backend/src/core/remote/activitypub/type.ts b/packages/backend/src/core/remote/activitypub/type.ts
index de7eb0ed8332ae446b7d74ef0d21b273836fc41c..dcc5110aa50f58cd3a17cb78c71788d4f5b71f5c 100644
--- a/packages/backend/src/core/remote/activitypub/type.ts
+++ b/packages/backend/src/core/remote/activitypub/type.ts
@@ -111,8 +111,9 @@ export interface IPost extends IObject {
 		mediaType: string;
 	};
 	_misskey_quote?: string;
+	_misskey_content?: string;
 	quoteUrl?: string;
-	_misskey_talk: boolean;
+	_misskey_talk?: boolean;
 }
 
 export interface IQuestion extends IObject {
diff --git a/packages/backend/src/server/api/endpoints.ts b/packages/backend/src/server/api/endpoints.ts
index a05bb5a7e02a1f7e1b616f7d65884162956e63cb..b2ab36e070b1a1741d80a36eec4c8a49e281ac63 100644
--- a/packages/backend/src/server/api/endpoints.ts
+++ b/packages/backend/src/server/api/endpoints.ts
@@ -725,10 +725,10 @@ export interface IEndpoint {
 	params: Schema;
 }
 
-const endpoints: IEndpoint[] = eps.map(([name, ep]) => {
+const endpoints: IEndpoint[] = (eps as [string, any]).map(([name, ep]) => {
 	return {
 		name: name,
-		meta: ep.meta || {},
+		meta: ep.meta ?? {},
 		params: ep.paramDef,
 	};
 });