diff --git a/posts/arrow-clicked/index.js b/posts/arrow-clicked/index.js
index 5ef4910..9fb61cc 100644
--- a/posts/arrow-clicked/index.js
+++ b/posts/arrow-clicked/index.js
@@ -8,6 +8,8 @@ module.exports.index = function(req, res) {
             "INSERT INTO arrowclicked(exp_id, arrow_id, time) VALUES($1,$2, to_timestamp($3));",
             [req.session.exp_id, req.body.arrow_id, req.body.time],
             function(err, result) {
+                if (err !== null)
+                    console.log("[DBERROR] " + err);
                 release();
             }
         );
diff --git a/posts/coin-clicked/index.js b/posts/coin-clicked/index.js
index 0c30bbd..0ae7c37 100644
--- a/posts/coin-clicked/index.js
+++ b/posts/coin-clicked/index.js
@@ -8,6 +8,8 @@ module.exports.index = function(req, res) {
             "INSERT INTO coinclicked(exp_id, coin_id, time) VALUES($1,$2, to_timestamp($3));",
             [req.session.exp_id, req.body.coin_id, req.body.time],
             function(err, result) {
+                if (err !== null)
+                    console.log("[DBERROR] " + err);
                 release();
             }
         );
diff --git a/posts/fps/index.js b/posts/fps/index.js
index 445e5b2..a0344ae 100644
--- a/posts/fps/index.js
+++ b/posts/fps/index.js
@@ -8,6 +8,8 @@ module.exports.index = function(req, res) {
             "INSERT INTO fpscounter(exp_id, fps) VALUES($1,$2);",
             [req.session.exp_id, req.body.fps],
             function(err, result) {
+                if (err !== null)
+                    console.log("[DBERROR] " + err);
                 release();
             }
         );
diff --git a/posts/hovered/index.js b/posts/hovered/index.js
index 37f3663..2ea2735 100644
--- a/posts/hovered/index.js
+++ b/posts/hovered/index.js
@@ -14,6 +14,8 @@ module.exports.index = function(req, res) {
                 req.body.arrow_id
             ],
             function(err, result) {
+                if (err !== null)
+                    console.log("[DBERROR] " + err);
                 release();
             }
         );
diff --git a/posts/keyboard-event/index.js b/posts/keyboard-event/index.js
index e0e4f1b..122eaae 100644
--- a/posts/keyboard-event/index.js
+++ b/posts/keyboard-event/index.js
@@ -20,6 +20,8 @@ module.exports.index = function(req, res) {
                 req.body.time
             ],
             function(err, result) {
+                if (err !== null)
+                    console.log("[DBERROR] " + err);
                 release();
             }
         );
diff --git a/posts/previous-next-clicked/index.js b/posts/previous-next-clicked/index.js
index c4afaa8..59c8fae 100644
--- a/posts/previous-next-clicked/index.js
+++ b/posts/previous-next-clicked/index.js
@@ -19,6 +19,8 @@ module.exports.index = function(req, res) {
                 req.body.camera.target.z
             ],
             function(err, result) {
+                if (err !== null)
+                    console.log("[DBERROR] " + err);
                 release();
             }
         );
diff --git a/posts/reset-clicked/index.js b/posts/reset-clicked/index.js
index 31c8676..7845735 100644
--- a/posts/reset-clicked/index.js
+++ b/posts/reset-clicked/index.js
@@ -12,6 +12,8 @@ module.exports.index = function(req, res) {
                 req.body.time
             ],
             function(err, result) {
+                if (err !== null)
+                    console.log("[DBERROR] " + err);
                 release();
             }
         );