diff --git a/src/main/kotlin/dev/usbharu/hideout/controller/InboxControllerImpl.kt b/src/main/kotlin/dev/usbharu/hideout/controller/InboxControllerImpl.kt
index 7afc1871..235c821f 100644
--- a/src/main/kotlin/dev/usbharu/hideout/controller/InboxControllerImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/controller/InboxControllerImpl.kt
@@ -10,13 +10,24 @@ import org.springframework.web.bind.annotation.RestController
 @RestController
 class InboxControllerImpl(private val apService: APService) : InboxController {
     override suspend fun inbox(@RequestBody string: String): ResponseEntity<Unit> {
-        val parseActivity = apService.parseActivity(string)
+        val parseActivity = try {
+            apService.parseActivity(string)
+        } catch (e: Exception) {
+            LOGGER.warn("FAILED Parse Activity", e)
+            return ResponseEntity.accepted().build()
+        }
         LOGGER.info("INBOX Processing Activity Type: {}", parseActivity)
-        apService.processActivity(string, parseActivity)
+        try {
+            apService.processActivity(string, parseActivity)
+        } catch (e: Exception) {
+            LOGGER.warn("FAILED Process Activity $parseActivity", e)
+            return ResponseEntity(HttpStatus.ACCEPTED)
+        }
+        LOGGER.info("SUCCESS Processing Activity Type: {}", parseActivity)
         return ResponseEntity(HttpStatus.ACCEPTED)
     }
 
     companion object {
-        val LOGGER = LoggerFactory.getLogger(InboxControllerImpl::class.java)
+        private val LOGGER = LoggerFactory.getLogger(InboxControllerImpl::class.java)
     }
 }
diff --git a/src/main/kotlin/dev/usbharu/hideout/controller/wellknown/WebFingerController.kt b/src/main/kotlin/dev/usbharu/hideout/controller/wellknown/WebFingerController.kt
index 070b82fa..a8032d1a 100644
--- a/src/main/kotlin/dev/usbharu/hideout/controller/wellknown/WebFingerController.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/controller/wellknown/WebFingerController.kt
@@ -5,6 +5,7 @@ import dev.usbharu.hideout.domain.model.wellknown.WebFinger
 import dev.usbharu.hideout.service.api.WebFingerApiService
 import dev.usbharu.hideout.util.AcctUtil
 import kotlinx.coroutines.runBlocking
+import org.slf4j.LoggerFactory
 import org.springframework.http.HttpStatus
 import org.springframework.http.ResponseEntity
 import org.springframework.stereotype.Controller
@@ -18,7 +19,13 @@ class WebFingerController(
 ) {
     @GetMapping("/.well-known/webfinger")
     fun webfinger(@RequestParam("resource") resource: String): ResponseEntity<WebFinger> = runBlocking {
-        val acct = AcctUtil.parse(resource.replace("acct:", ""))
+        logger.info("WEBFINGER Lookup webfinger resource: {}", resource)
+        val acct = try {
+            AcctUtil.parse(resource.replace("acct:", ""))
+        } catch (e: IllegalArgumentException) {
+            logger.warn("FAILED Parse acct.", e)
+            return@runBlocking ResponseEntity.badRequest().build()
+        }
         val user =
             webFingerApiService.findByNameAndDomain(acct.username, acct.domain ?: applicationConfig.url.host)
         val webFinger = WebFinger(
@@ -31,6 +38,11 @@ class WebFingerController(
                 )
             )
         )
+        logger.info("SUCCESS Lookup webfinger resource: {} acct: {}", resource, acct)
         ResponseEntity(webFinger, HttpStatus.OK)
     }
+
+    companion object {
+        private val logger = LoggerFactory.getLogger(WebFingerController::class.java)
+    }
 }
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/ap/APService.kt b/src/main/kotlin/dev/usbharu/hideout/service/ap/APService.kt
index 0e14909c..9ea98a66 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/ap/APService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/ap/APService.kt
@@ -188,11 +188,21 @@ class APServiceImpl(
     val logger: Logger = LoggerFactory.getLogger(APServiceImpl::class.java)
     override fun parseActivity(json: String): ActivityType {
         val readTree = objectMapper.readTree(json)
-        logger.trace("readTree: {}", readTree)
+        logger.trace(
+            """
+            |
+            |***** Trace Begin Activity *****
+            |
+            |{}
+            |
+            |***** Trace End Activity *****
+            |
+        """.trimMargin(), readTree.toPrettyString()
+        )
         if (readTree.isObject.not()) {
             throw JsonParseException("Json is not object.")
         }
-        val type = readTree["type"]
+        val type = readTree["type"] ?: throw JsonParseException("Type is null")
         if (type.isArray) {
             return type.firstNotNullOf { jsonNode: JsonNode ->
                 ActivityType.values().firstOrNull { it.name.equals(jsonNode.asText(), true) }
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/post/PostServiceImpl.kt b/src/main/kotlin/dev/usbharu/hideout/service/post/PostServiceImpl.kt
index c98ee233..a22666fa 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/post/PostServiceImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/post/PostServiceImpl.kt
@@ -7,6 +7,7 @@ import dev.usbharu.hideout.query.PostQueryService
 import dev.usbharu.hideout.repository.PostRepository
 import dev.usbharu.hideout.repository.UserRepository
 import org.jetbrains.exposed.exceptions.ExposedSQLException
+import org.slf4j.LoggerFactory
 import org.springframework.stereotype.Service
 import java.time.Instant
 import java.util.*
@@ -22,12 +23,19 @@ class PostServiceImpl(
     private val interceptors = Collections.synchronizedList(mutableListOf<PostCreateInterceptor>())
 
     override suspend fun createLocal(post: PostCreateDto): Post {
+        logger.info("START Create Local Post user: {}, media: {}", post.userId, post.mediaIds.size)
         val create = internalCreate(post, true)
         interceptors.forEach { it.run(create) }
+        logger.info("SUCCESS Create Local Post url: {}", create.url)
         return create
     }
 
-    override suspend fun createRemote(post: Post): Post = internalCreate(post, false)
+    override suspend fun createRemote(post: Post): Post {
+        logger.info("START Create Remote Post user: {}, remote url: {}", post.userId, post.apId)
+        val createdPost = internalCreate(post, false)
+        logger.info("SUCCESS Create Remote Post url: {}", createdPost.url)
+        return createdPost
+    }
 
     override fun addInterceptor(postCreateInterceptor: PostCreateInterceptor) {
         interceptors.add(postCreateInterceptor)
@@ -58,4 +66,8 @@ class PostServiceImpl(
         )
         return internalCreate(createPost, isLocal)
     }
+
+    companion object {
+        private val logger = LoggerFactory.getLogger(PostServiceImpl::class.java)
+    }
 }
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/reaction/ReactionServiceImpl.kt b/src/main/kotlin/dev/usbharu/hideout/service/reaction/ReactionServiceImpl.kt
index 4ccac212..134e0ba6 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/reaction/ReactionServiceImpl.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/reaction/ReactionServiceImpl.kt
@@ -20,9 +20,7 @@ class ReactionServiceImpl(
                 reactionRepository.save(
                     Reaction(reactionRepository.generateId(), 0, postId, userId)
                 )
-            } catch (e: ExposedSQLException) {
-                LOGGER.warn("FAILED Failure to persist reaction information.")
-                LOGGER.debug("FAILED", e)
+            } catch (_: ExposedSQLException) {
             }
         }
     }
diff --git a/src/main/resources/logback.xml b/src/main/resources/logback.xml
index 73cc4b4a..5e4e2bc3 100644
--- a/src/main/resources/logback.xml
+++ b/src/main/resources/logback.xml
@@ -14,4 +14,5 @@
     <logger name="io.ktor.server.plugins.contentnegotiation" level="INFO"/>
     <logger name="org.springframework.web.filter.CommonsRequestLoggingFilter" level="INFO"/>
     <logger name="org.mongodb.driver.protocol.command" level="INFO"/>
+    <logger name="dev.usbharu" level="TRACE"/>
 </configuration>