diff --git a/src/api/client_server/room.rs b/src/api/client_server/room.rs
index 8c39b78e..7bdccae1 100644
--- a/src/api/client_server/room.rs
+++ b/src/api/client_server/room.rs
@@ -429,7 +429,9 @@ pub async fn get_room_event_route(
         .rooms
         .timeline
         .get_pdu(&body.event_id)?
-        .ok_or(Error::BadRequest(ErrorKind::NotFound, "Event not found."))?;
+        .ok_or({
+            warn!("Event not found, event ID: {:?}", &body.event_id);
+            Error::BadRequest(ErrorKind::NotFound, "Event not found.")})?;
 
     if !services().rooms.state_accessor.user_can_see_event(
         sender_user,
diff --git a/src/api/client_server/state.rs b/src/api/client_server/state.rs
index 8e4ceaf9..5ea7e998 100644
--- a/src/api/client_server/state.rs
+++ b/src/api/client_server/state.rs
@@ -12,6 +12,7 @@ use ruma::{
     serde::Raw,
     EventId, RoomId, UserId,
 };
+use tracing::log::warn;
 
 /// # `PUT /_matrix/client/r0/rooms/{roomId}/state/{eventType}/{stateKey}`
 ///
@@ -129,10 +130,11 @@ pub async fn get_state_events_for_key_route(
         .rooms
         .state_accessor
         .room_state_get(&body.room_id, &body.event_type, &body.state_key)?
-        .ok_or(Error::BadRequest(
-            ErrorKind::NotFound,
+        .ok_or({
+            warn!("State event {:?} not found in room {:?}", &body.event_type, &body.room_id);
+            Error::BadRequest(ErrorKind::NotFound,
             "State event not found.",
-        ))?;
+        )})?;
 
     Ok(get_state_events_for_key::v3::Response {
         content: serde_json::from_str(event.content.get())
@@ -165,10 +167,10 @@ pub async fn get_state_events_for_empty_key_route(
         .rooms
         .state_accessor
         .room_state_get(&body.room_id, &body.event_type, "")?
-        .ok_or(Error::BadRequest(
-            ErrorKind::NotFound,
-            "State event not found.",
-        ))?;
+        .ok_or({
+            warn!("State event {:?} not found in room {:?}", &body.event_type, &body.room_id);
+            Error::BadRequest(ErrorKind::NotFound,
+            "State event not found.",)})?;
 
     Ok(get_state_events_for_key::v3::Response {
         content: serde_json::from_str(event.content.get())
diff --git a/src/api/server_server.rs b/src/api/server_server.rs
index 9a1b6806..95716e72 100644
--- a/src/api/server_server.rs
+++ b/src/api/server_server.rs
@@ -711,7 +711,8 @@ pub async fn send_transaction_message_route(
         let (event_id, value, room_id) = match r {
             Ok(t) => t,
             Err(e) => {
-                warn!("Could not parse pdu: {e}");
+                warn!("Could not parse PDU: {e}");
+                warn!("Full PDU: {:?}", &pdu);
                 continue;
             }
         };
@@ -952,7 +953,9 @@ pub async fn get_event_route(
         .rooms
         .timeline
         .get_pdu_json(&body.event_id)?
-        .ok_or(Error::BadRequest(ErrorKind::NotFound, "Event not found."))?;
+        .ok_or({
+            warn!("Event not found, event ID: {:?}", &body.event_id);
+            Error::BadRequest(ErrorKind::NotFound, "Event not found.")})?;
 
     let room_id_str = event
         .get("room_id")
@@ -1192,7 +1195,9 @@ pub async fn get_event_authorization_route(
         .rooms
         .timeline
         .get_pdu_json(&body.event_id)?
-        .ok_or(Error::BadRequest(ErrorKind::NotFound, "Event not found."))?;
+        .ok_or({
+            warn!("Event not found, event ID: {:?}", &body.event_id);
+            Error::BadRequest(ErrorKind::NotFound, "Event not found.")})?;
 
     let room_id_str = event
         .get("room_id")
diff --git a/src/service/rooms/state/mod.rs b/src/service/rooms/state/mod.rs
index d782386b..48e3d791 100644
--- a/src/service/rooms/state/mod.rs
+++ b/src/service/rooms/state/mod.rs
@@ -342,7 +342,9 @@ impl Service {
             .transpose()?;
         let room_version = create_event_content
             .map(|create_event| create_event.room_version)
-            .ok_or(Error::BadDatabase("Invalid room version"))?;
+            .ok_or({
+                warn!("Invalid room version for room {room_id}");
+                Error::BadDatabase("Invalid room version")})?;
         Ok(room_version)
     }