java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.toLowerCase(java.util.Locale)' on a null object reference

ANDROID_VERSION: '11'
APP_VERSION_NAME: 1.17.0
AVAILABLE_MEM_SIZE: 25834594304
BRAND: unknown
DATE: '2023-08-28'
Message-ID: $2b$12$f88fdce6e03f0bed35e68uMOXkgMgFOvtJh9GvPvkQc/PabAjXR4e
PACKAGE_NAME: org.fdroid.fdroid
PHONE_MODEL: unknown
STACK_TRACE_HASH: d78cba08
USER_COMMENT: Crash on + Add repo, after I added wrong link and deleted that repo.

STACK_TRACE:

java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.String.toLowerCase(java.util.Locale)' on a null object reference
	at org.fdroid.fdroid.data.NewRepoConfig.sanitizeRepoUri(NewRepoConfig.java:190)
	at org.fdroid.fdroid.views.ManageReposActivity.showAddRepo(ManageReposActivity.java:256)
	at org.fdroid.fdroid.views.ManageReposActivity.lambda$onCreate$0(ManageReposActivity.java:137)
	at org.fdroid.fdroid.views.ManageReposActivity.$r8$lambda$lbbRUohcRBiHqqM22ggRdAcaxgQ(ManageReposActivity.java:0)
	at org.fdroid.fdroid.views.ManageReposActivity$$ExternalSyntheticLambda0.onMenuItemClick(R8$$SyntheticClass:0)
	at androidx.appcompat.widget.Toolbar$1.onMenuItemClick(Toolbar.java:225)
	at androidx.appcompat.widget.ActionMenuView$MenuBuilderCallback.onMenuItemSelected(ActionMenuView.java:781)
	at androidx.appcompat.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:836)
	at androidx.appcompat.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:159)
	at androidx.appcompat.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:987)
	at androidx.appcompat.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:977)
	at androidx.appcompat.widget.ActionMenuView.invokeItem(ActionMenuView.java:625)
	at androidx.appcompat.view.menu.ActionMenuItemView.onClick(ActionMenuItemView.java:156)
	at android.view.View.performClick(View.java:7448)
	at android.view.View.performClickInternal(View.java:7425)
	at android.view.View.access$3600(View.java:810)
	at android.view.View$PerformClick.run(View.java:28305)
	at android.os.Handler.handleCallback(Handler.java:938)
	at android.os.Handler.dispatchMessage(Handler.java:99)
	at android.os.Looper.loop(Looper.java:223)
	at android.app.ActivityThread.main(ActivityThread.java:7669)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:594)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)

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