fix building error when not releaase

app/build.gradle

@@ -18,13 +18,12 @@ apply plugin: 'com.google.firebase.crashlytics'
 
 // Create a variable called keystorePropertiesFile, and initialize it to your
 // keystore.properties file, in the rootProject folder.
-def keystorePropertiesFile = rootProject.file("../roomParkKeystore.properties")
+
 
 // Initialize a new Properties() object called keystoreProperties.
 def keystoreProperties = new Properties()
 
 // Load your keystore.properties file into the keystoreProperties object.
-keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
 
 
 android {
@@ -43,12 +42,19 @@ android {
 
     signingConfigs {
         release {
+            def keystorePropertiesFile = rootProject.file("../roomParkKeystore.properties")
+            if ( keystorePropertiesFile.exists() ){
+                keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+                keyAlias keystoreProperties['keyAlias']
+                keyPassword keystoreProperties['keyPassword']
+                storeFile file(keystoreProperties['storeFile'])
+                storePassword keystoreProperties['storePassword']
+            }
+
+//            else throw new GradleException('Plesase, provide keystore properties file! ')
             // You need to specify either an absolute path or include the
             // keystore file in the same directory as the build.gradle file.
-            keyAlias keystoreProperties['keyAlias']
-            keyPassword keystoreProperties['keyPassword']
-            storeFile file(keystoreProperties['storeFile'])
-            storePassword keystoreProperties['storePassword']
+
         }
     }