In the VC application, the sharing of photos does not work

Tell me, please, what's the problem?

public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.action_share: String currentImageUrl = photos.get(viewPager.getCurrentItem()).getSrc_big(); Intent shareIntent = new Intent(); shareIntent.setAction(Intent.ACTION_SEND); shareIntent.putExtra(Intent.EXTRA_STREAM, currentImageUrl); shareIntent.setType("image/jpeg"); startActivity(shareIntent); break; default: break; } return false; } private void setShareIntent(Intent shareIntent) { shareIntent = pagerIntent; if (mShareActionProvider != null) { mShareActionProvider.setShareIntent(shareIntent); } }