diff --git a/lib/Onyx.ts b/lib/Onyx.ts
index 4356ec36d..29a1d20ab 100644
--- a/lib/Onyx.ts
+++ b/lib/Onyx.ts
@@ -301,7 +301,7 @@ function merge<TKey extends OnyxKey>(key: TKey, changes: OnyxMergeInput<TKey>):
                     OnyxUtils.sendActionToDevTools(OnyxUtils.METHOD.MERGE, key, changes, mergedValue);
                 });
             } catch (error) {
-                Logger.logAlert(`An error occurred while applying merge for key: ${key}, Error: ${error}`);
+                Logger.logAlert(`An error occurred while applying merge for key: ${key}, Error: ${error instanceof Error ? error.toString() : String(error)}`);
                 return Promise.resolve();
             }
         });
diff --git a/lib/OnyxConnectionManager.ts b/lib/OnyxConnectionManager.ts
index 1eae1cdc5..ddf7ff00f 100644
--- a/lib/OnyxConnectionManager.ts
+++ b/lib/OnyxConnectionManager.ts
@@ -138,7 +138,7 @@ class OnyxConnectionManager {
                     (callback as DefaultConnectCallback<OnyxKey>)(connection.cachedCallbackValue, connection.cachedCallbackKey as OnyxKey);
                 }
             } catch (error) {
-                Logger.logAlert(`[ConnectionManager] Subscriber callback threw an error for key '${connection.onyxKey}': ${error}`);
+                Logger.logAlert(`[ConnectionManager] Subscriber callback threw an error for key '${connection.onyxKey}': ${String(error)}`);
             }
         }
     }
diff --git a/lib/OnyxUtils.ts b/lib/OnyxUtils.ts
index c4ac63f61..519a1d8dc 100644
--- a/lib/OnyxUtils.ts
+++ b/lib/OnyxUtils.ts
@@ -62,6 +62,10 @@ function resetDiskPressureLogThrottle(): void {
     lastDiskPressureLogTime = 0;
 }
 
+function formatCaughtError(error: unknown): string {
+    return error instanceof Error ? error.toString() : String(error);
+}
+
 type OnyxMethod = ValueOf<typeof METHOD>;
 
 /** Result of `prepareKeyValuePairsForStorage`: pairs to write and keys whose `null` value marks them for removal. */
@@ -598,7 +602,7 @@ function keysChanged<TKey extends CollectionKeyBase>(
             lastConnectionCallbackData.set(subscriber.subscriptionID, {value: cachedCollection, matchedKey: subscriber.key});
             subscriber.callback(cachedCollection, subscriber.key);
         } catch (error) {
-            Logger.logAlert(`[OnyxUtils.keysChanged] Subscriber callback threw an error for key '${collectionKey}': ${error}`);
+            Logger.logAlert(`[OnyxUtils.keysChanged] Subscriber callback threw an error for key '${collectionKey}': ${formatCaughtError(error)}`);
         }
     }
 
@@ -621,7 +625,7 @@ function keysChanged<TKey extends CollectionKeyBase>(
                 matchedKey: subscriber.key,
             });
         } catch (error) {
-            Logger.logAlert(`[OnyxUtils.keysChanged] Subscriber callback threw an error for key '${collectionKey}': ${error}`);
+            Logger.logAlert(`[OnyxUtils.keysChanged] Subscriber callback threw an error for key '${collectionKey}': ${formatCaughtError(error)}`);
         }
     }
 }
@@ -694,7 +698,7 @@ function keyChanged<TKey extends OnyxKey>(key: TKey, value: OnyxValue<TKey>, can
                 });
                 continue;
             } catch (error) {
-                Logger.logAlert(`[OnyxUtils.keyChanged] Subscriber callback threw an error for key '${key}': ${error}`);
+                Logger.logAlert(`[OnyxUtils.keyChanged] Subscriber callback threw an error for key '${key}': ${formatCaughtError(error)}`);
             }
 
             continue;