Use ACF Galleries field with ACF Flexible Content

single.php

<?php

				// GALLERY LAYOUTS - Flexible Content

				// check if the flexible content field has rows of data
				if( have_rows('galleries') ):

				     // loop through the rows of data
				    while ( have_rows('galleries') ) : the_row();

				        if( get_row_layout() == '2_columns_gallery_layout' ):

									$images50 = get_sub_field('2_columns_gallery_images');

									if( $images50 ):

										echo '<ul class="portfolio-grid-50">';

				      	  	foreach( $images50 as $image50 ):
											 echo "<li><img src='" . $image50['url'] . "'></li>";
										endforeach;

										echo '</ul>';

									endif;

				        elseif( get_row_layout() == '1_column_gallery_layout' ):

									$images100 = get_sub_field('1_column_gallery_images');

									if( $images100 ):

										echo '<ul class="portfolio-grid-100">';

				      	  	foreach( $images100 as $image100 ):
											 echo "<li><img src='" . $image100['url'] . "'></li>";
										endforeach;

										echo '</ul>';

									endif;

				        endif;

				    endwhile;

				else :

				    // no layouts found

				endif;

?>