diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/Extensions.kt b/app/src/main/java/pl/szczodrzynski/edziennik/Extensions.kt
index 02dd918b..48076d0b 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/Extensions.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/Extensions.kt
@@ -43,6 +43,8 @@ import pl.szczodrzynski.edziennik.data.db.modules.teachers.Teacher
 import pl.szczodrzynski.edziennik.data.db.modules.teams.Team
 import pl.szczodrzynski.edziennik.utils.models.Time
 import pl.szczodrzynski.navlib.getColorFromRes
+import java.io.PrintWriter
+import java.io.StringWriter
 import java.math.BigInteger
 import java.security.MessageDigest
 import java.text.SimpleDateFormat
@@ -682,3 +684,10 @@ val String.firstLettersName: String
         }
         return nameShort
     }
+
+val Throwable.stackTraceString: String
+    get() {
+        val sw = StringWriter()
+        printStackTrace(PrintWriter(sw))
+        return sw.toString()
+    }
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/error/ErrorSnackbar.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/error/ErrorSnackbar.kt
index 0f184605..66dcd766 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/error/ErrorSnackbar.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/error/ErrorSnackbar.kt
@@ -8,9 +8,12 @@ import android.view.View
 import androidx.appcompat.app.AppCompatActivity
 import androidx.coordinatorlayout.widget.CoordinatorLayout
 import androidx.core.graphics.ColorUtils
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.snackbar.Snackbar
+import pl.szczodrzynski.edziennik.App
 import pl.szczodrzynski.edziennik.R
 import pl.szczodrzynski.edziennik.data.api.models.ApiError
+import pl.szczodrzynski.edziennik.stackTraceString
 import pl.szczodrzynski.navlib.getColorFromAttr
 
 class ErrorSnackbar(val activity: AppCompatActivity) {
@@ -26,7 +29,22 @@ class ErrorSnackbar(val activity: AppCompatActivity) {
         this.coordinator = coordinatorLayout
         snackbar = Snackbar.make(coordinator, R.string.snackbar_error_text, Snackbar.LENGTH_INDEFINITE)
         snackbar?.setAction(R.string.more) {
+            if (errors.isNotEmpty()) {
+                val message = errors.map {
+                    if (App.devMode) it.throwable?.stackTraceString
+                            ?: it.throwable?.localizedMessage ?: ""
+                    else it.throwable?.localizedMessage
+                }.joinToString("\n")
 
+                MaterialAlertDialogBuilder(activity)
+                        .setTitle(R.string.dialog_error_details_title)
+                        .setMessage(message)
+                        .setPositiveButton(R.string.ok) { dialog, _ ->
+                            errors.clear()
+                            dialog.dismiss()
+                        }
+                        .show()
+            }
         }
         val bgColor = ColorUtils.compositeColors(
                 getColorFromAttr(activity, R.attr.colorOnSurface) and 0xcfffffff.toInt(),
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index f60689e5..e1dd3e8e 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1130,4 +1130,5 @@
     <string name="login_edudziennik_title">Zaloguj się - Edudziennik</string>
     <string name="login_edudziennik_subtitle">Użyj danych, którymi logujesz się do wersji komputerowej Edudziennika.</string>
     <string name="edziennik_progress_login_edudziennik_web">Logowanie do Edudziennika</string>
+    <string name="dialog_error_details_title">Szczegóły błędu</string>
 </resources>