diff --git a/app/build.gradle b/app/build.gradle
index 9b4a7f1..cdb3cec 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -13,7 +13,7 @@ android {
         minSdkVersion 23
         targetSdkVersion 28
         versionCode 14
-        versionName "0.4.95"
+        versionName "0.4.99"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         resValue "string", "build_time", buildTime()
         setProperty("archivesBaseName", "projectlaogai-$versionName")
diff --git a/app/src/main/java/org/mosad/seil0/projectlaogai/controller/TCoRAPIController.kt b/app/src/main/java/org/mosad/seil0/projectlaogai/controller/TCoRAPIController.kt
index 03a05dd..2d03274 100644
--- a/app/src/main/java/org/mosad/seil0/projectlaogai/controller/TCoRAPIController.kt
+++ b/app/src/main/java/org/mosad/seil0/projectlaogai/controller/TCoRAPIController.kt
@@ -23,6 +23,7 @@
 package org.mosad.seil0.projectlaogai.controller
 
 import android.content.Context
+import android.util.Log
 import org.jetbrains.anko.doAsync
 import org.json.JSONObject
 import org.mosad.seil0.projectlaogai.controller.PreferencesController.Companion.coursesCacheTime
@@ -32,69 +33,87 @@ import java.io.BufferedWriter
 import java.io.File
 import java.io.FileWriter
 import java.net.URL
+import kotlin.Exception
 
 class TCoRAPIController {
 
     companion object {
+        private const val className = "TCoRAPIController"
+        private const val tcorBaseURL = "https://tcor.mosad.xyz"
 
         /**
          * get the json object from tcor api and write it as file (cache)
          */
         fun getCoursesList(context: Context) = doAsync {
-            val url = URL("https://tcor.mosad.xyz/courseList")
-            val file = File(context.filesDir, "courses.json")
+            try {
+                val url = URL("$tcorBaseURL/courseList")
+                val file = File(context.filesDir, "courses.json")
 
-            // read data from the API
-            val coursesObject = JSONObject(url.readText()) //JSONObject(inReader.readLine())
+                // read data from the API
+                val coursesObject = JSONObject(url.readText()) //JSONObject(inReader.readLine())
 
-            // write the json object to a file
-            val writer = BufferedWriter(FileWriter(file))
-            writer.write(coursesObject.toString())
-            writer.close()
+                // write the json object to a file
+                val writer = BufferedWriter(FileWriter(file))
+                writer.write(coursesObject.toString())
+                writer.close()
+
+                // update cache time
+                coursesCacheTime = System.currentTimeMillis() / 1000
+                PreferencesController.save(context)
+            } catch (ex: Exception) {
+                Log.e(className, "failed to get /courseList", ex)
+            }
 
-            // update cache time
-            coursesCacheTime = System.currentTimeMillis() / 1000
-            PreferencesController.save(context)
         }
 
         /**
          * get the json object from tcor api and write it as file (cache)
          */
         fun getMensa(context: Context) = doAsync {
-            val url = URL("https://tcor.mosad.xyz/mensamenu")
-            val file = File(context.filesDir, "mensa.json")
+            try {
+                val url = URL("$tcorBaseURL/mensamenu")
+                val file = File(context.filesDir, "mensa.json")
 
-            // read data from the API
-            val mensaObject = JSONObject(url.readText()) //JSONObject(inReader.readLine())
+                // read data from the API
+                val mensaObject = JSONObject(url.readText()) //JSONObject(inReader.readLine())
 
-            // write the json object to a file
-            val writer = BufferedWriter(FileWriter(file))
-            writer.write(mensaObject.toString())
-            writer.close()
+                // write the json object to a file
+                val writer = BufferedWriter(FileWriter(file))
+                writer.write(mensaObject.toString())
+                writer.close()
+
+                // update cache time
+                mensaCacheTime = System.currentTimeMillis() / 1000
+                PreferencesController.save(context)
+            } catch (ex: Exception) {
+                Log.e(className, "failed to get /mensamenu", ex)
+            }
 
-            // update cache time
-            mensaCacheTime = System.currentTimeMillis() / 1000
-            PreferencesController.save(context)
         }
 
         /**
          * get the json object from tcor api and write it as file (cache)
          */
         fun getTimetable(courseName: String, week: Int, context: Context) = doAsync {
-            val url = URL("https://tcor.mosad.xyz/timetable?courseName=$courseName&week=$week")
-            val file = File(context.filesDir, "timetable-$courseName-$week.json")
+            try {
+                val url = URL("$tcorBaseURL/timetable?courseName=$courseName&week=$week")
+                val file = File(context.filesDir, "timetable-$courseName-$week.json")
 
-            // read data from the API
-            val mensaObject = JSONObject(url.readText()) //JSONObject(inReader.readLine())
+                // read data from the API
+                val mensaObject = JSONObject(url.readText()) //JSONObject(inReader.readLine())
 
-            // write the json object to a file
-            val writer = BufferedWriter(FileWriter(file))
-            writer.write(mensaObject.toString())
-            writer.close()
+                // write the json object to a file
+                val writer = BufferedWriter(FileWriter(file))
+                writer.write(mensaObject.toString())
+                writer.close()
+
+                // update cache time
+                timetableCacheTime = System.currentTimeMillis() / 1000
+                PreferencesController.save(context)
+            } catch (ex: Exception) {
+                Log.e(className, "failed to get /timetable", ex)
+            }
 
-            // update cache time
-            timetableCacheTime = System.currentTimeMillis() / 1000
-            PreferencesController.save(context)
         }
     }
 
diff --git a/fastlane/metadata/android/en-US/chnagelogs/14.txt b/fastlane/metadata/android/en-US/chnagelogs/14.txt
index 81933ed..cc576b3 100644
--- a/fastlane/metadata/android/en-US/chnagelogs/14.txt
+++ b/fastlane/metadata/android/en-US/chnagelogs/14.txt
@@ -1,6 +1,6 @@
 This release 0.5.0 is called  "artistical Apollon".
 
-* new: it's now possible to choos a theme (light, dark or balck)
+* new: it's now possible to choose a theme (light, dark or black)
 * new: you can now check your current mensa card balance
 * change: updated some libs, updated kotlin to 1.3.41
 * fix: the mensa should now show the correct meals on sunday/monday