diff --git a/c/src/ml-api-common-tizen-feature-check.c b/c/src/ml-api-common-tizen-feature-check.c
index 36fa0897..bc9d5e99 100644
--- a/c/src/ml-api-common-tizen-feature-check.c
+++ b/c/src/ml-api-common-tizen-feature-check.c
@@ -45,19 +45,23 @@ static feature_info_s *feature_info = NULL;
 /**
  * @brief Internal function to initialize feature state.
  */
-static void
+static int
 ml_tizen_initialize_feature_state (void)
 {
   int i;
 
   if (feature_info == NULL) {
-    feature_info = g_new0 (feature_info_s, 1);
-    g_assert (feature_info);
+    feature_info = g_try_new0 (feature_info_s, 1);
+    if (feature_info == NULL) {
+      _ml_loge ("Failed to allocate memory for feature_info");
+      return ML_ERROR_OUT_OF_MEMORY;
+    }
 
     g_mutex_init (&feature_info->mutex);
     for (i = 0; i < ML_FEATURE_MAX; i++)
       feature_info->feature_state[i] = NOT_CHECKED_YET;
   }
+  return ML_ERROR_NONE;
 }
 
 /**
@@ -66,7 +70,12 @@ ml_tizen_initialize_feature_state (void)
 int
 _ml_tizen_set_feature_state (ml_feature_e ml_feature, int state)
 {
-  ml_tizen_initialize_feature_state ();
+  int status;
+
+  status = ml_tizen_initialize_feature_state ();
+  if (status != ML_ERROR_NONE)
+    return status;
+
   g_mutex_lock (&feature_info->mutex);
 
   /**
@@ -97,7 +106,9 @@ _ml_tizen_get_feature_enabled (ml_feature_e ml_feature)
   int ret;
   int feature_enabled;
 
-  ml_tizen_initialize_feature_state ();
+  ret = ml_tizen_initialize_feature_state ();
+  if (ret != ML_ERROR_NONE)
+    return ret;
 
   g_mutex_lock (&feature_info->mutex);
   feature_enabled = feature_info->feature_state[ml_feature];
diff --git a/c/src/ml-api-inference-pipeline.c b/c/src/ml-api-inference-pipeline.c
index 45b2c70b..4667d3b3 100644
--- a/c/src/ml-api-inference-pipeline.c
+++ b/c/src/ml-api-inference-pipeline.c
@@ -1031,7 +1031,7 @@ construct_pipeline_internal (const char *pipeline_description,
   pipeline = gst_parse_launch (description, &err);
   g_free (description);
 
-  if (pipeline == NULL || err) {
+  if (!GST_IS_PIPELINE (pipeline) || err) {
     _ml_error_report
         ("ml_pipeline_construct error: gst_parse_launch cannot parse and launch the given pipeline = [%s]. The error message from gst_parse_launch is '%s'.",
         pipeline_description, (err) ? err->message : "unknown reason");
@@ -1044,12 +1044,16 @@ construct_pipeline_internal (const char *pipeline_description,
     goto failed;
   }
 
-  g_assert (GST_IS_PIPELINE (pipeline));
   pipe_h->element = pipeline;
 
   /* bus and message callback */
   pipe_h->bus = gst_element_get_bus (pipeline);
-  g_assert (pipe_h->bus);
+  if (pipe_h->bus == NULL) {
+    _ml_error_report
+        ("ml_pipeline_construct error: Failed to retrieve bus from the pipeline.");
+    status = ML_ERROR_STREAMS_PIPE;
+    goto failed;
+  }
 
   gst_bus_enable_sync_message_emission (pipe_h->bus);
   pipe_h->signal_msg = g_signal_connect (pipe_h->bus, "sync-message",
diff --git a/java/android/nnstreamer/src/main/jni/nnstreamer-native-api.c b/java/android/nnstreamer/src/main/jni/nnstreamer-native-api.c
index f219d0d4..bdefd0b5 100644
--- a/java/android/nnstreamer/src/main/jni/nnstreamer-native-api.c
+++ b/java/android/nnstreamer/src/main/jni/nnstreamer-native-api.c
@@ -22,7 +22,11 @@ nns_attach_current_thread (pipeline_info_s * pipe_info)
   JavaVM *jvm;
   JavaVMAttachArgs args;
 
-  g_assert (pipe_info);
+  if (!pipe_info) {
+    _ml_loge ("pipe_info is NULL.");
+    return NULL;
+  }
+
   jvm = pipe_info->jvm;
 
   args.version = pipe_info->version;
@@ -48,7 +52,10 @@ nns_get_jni_env (pipeline_info_s * pipe_info)
 {
   JNIEnv *env;
 
-  g_assert (pipe_info);
+  if (!pipe_info) {
+    _ml_loge ("pipe_info is NULL.");
+    return NULL;
+  }
 
   if ((env = pthread_getspecific (pipe_info->jni_env)) == NULL) {
     env = nns_attach_current_thread (pipe_info);
@@ -197,15 +204,19 @@ nns_construct_pipe_info (JNIEnv * env, jobject thiz, gpointer handle,
   pipe_info = g_new0 (pipeline_info_s, 1);
   g_return_val_if_fail (pipe_info != NULL, NULL);
 
+  (*env)->GetJavaVM (env, &pipe_info->jvm);
+  if (!pipe_info->jvm) {
+    _ml_loge ("Failed to get Java VM.");
+    g_free (pipe_info);
+    return NULL;
+  }
+
   pipe_info->pipeline_type = type;
   pipe_info->pipeline_handle = handle;
   pipe_info->element_handles =
       g_hash_table_new_full (g_str_hash, g_str_equal, g_free,
       nns_free_element_data);
   g_mutex_init (&pipe_info->lock);
-
-  (*env)->GetJavaVM (env, &pipe_info->jvm);
-  g_assert (pipe_info->jvm);
   pthread_key_create (&pipe_info->jni_env, NULL);
 
   pipe_info->version = (*env)->GetVersion (env);
diff --git a/java/android/nnstreamer/src/main/jni/nnstreamer-native-common.c b/java/android/nnstreamer/src/main/jni/nnstreamer-native-common.c
index a3b86ad2..c3cee83c 100644
--- a/java/android/nnstreamer/src/main/jni/nnstreamer-native-common.c
+++ b/java/android/nnstreamer/src/main/jni/nnstreamer-native-common.c
@@ -551,11 +551,16 @@ nnstreamer_native_finalize (void)
 const char *
 nnstreamer_native_get_data_path (void)
 {
-  char *data_path = NULL;
+  const char *data_path = NULL;
 
   G_LOCK (nns_native_lock);
-  g_assert (g_nns_is_initialized);
-  data_path = g_files_dir;
+
+  if (g_nns_is_initialized) {
+    data_path = g_files_dir;
+  } else {
+    _ml_loge ("NNStreamer native library is not initialized.");    
+  }
+
   G_UNLOCK (nns_native_lock);
 
   return data_path;
diff --git a/java/android/nnstreamer/src/main/jni/nnstreamer-native-pipeline.c b/java/android/nnstreamer/src/main/jni/nnstreamer-native-pipeline.c
index 3eececfa..551829c4 100644
--- a/java/android/nnstreamer/src/main/jni/nnstreamer-native-pipeline.c
+++ b/java/android/nnstreamer/src/main/jni/nnstreamer-native-pipeline.c
@@ -227,7 +227,10 @@ nns_get_sink_handle (pipeline_info_s * pipe_info, const gchar * element_name)
   element_data_s *item;
   int status;
 
-  g_assert (pipe_info);
+  if (!pipe_info) {
+    _ml_loge ("pipe_info is NULL.");
+    return NULL;
+  }
   pipe = pipe_info->pipeline_handle;
 
   handle = (ml_pipeline_sink_h) nns_get_element_handle (pipe_info,
@@ -275,7 +278,10 @@ nns_get_src_handle (pipeline_info_s * pipe_info, const gchar * element_name)
   element_data_s *item;
   int status;
 
-  g_assert (pipe_info);
+  if (!pipe_info) {
+    _ml_loge ("pipe_info is NULL.");
+    return NULL;
+  }
   pipe = pipe_info->pipeline_handle;
 
   handle = (ml_pipeline_src_h) nns_get_element_handle (pipe_info,
@@ -323,7 +329,10 @@ nns_get_switch_handle (pipeline_info_s * pipe_info, const gchar * element_name)
   element_data_s *item;
   int status;
 
-  g_assert (pipe_info);
+  if (!pipe_info) {
+    _ml_loge ("pipe_info is NULL.");
+    return NULL;
+  }
   pipe = pipe_info->pipeline_handle;
 
   handle = (ml_pipeline_switch_h) nns_get_element_handle (pipe_info,
@@ -371,7 +380,10 @@ nns_get_valve_handle (pipeline_info_s * pipe_info, const gchar * element_name)
   element_data_s *item;
   int status;
 
-  g_assert (pipe_info);
+  if (!pipe_info) {
+    _ml_loge ("pipe_info is NULL.");
+    return NULL;
+  }
   pipe = pipe_info->pipeline_handle;
 
   handle = (ml_pipeline_valve_h) nns_get_element_handle (pipe_info,
@@ -419,7 +431,10 @@ nns_get_video_sink_data (pipeline_info_s * pipe_info,
   element_data_s *item;
   int status;
 
-  g_assert (pipe_info);
+  if (!pipe_info) {
+    _ml_loge ("pipe_info is NULL.");
+    return NULL;
+  }
   pipe = pipe_info->pipeline_handle;
 
   item = nns_get_element_data (pipe_info, element_name);