Hi

I am tyring to create a shortcode for the change profile photo section, I intend adding the shortcode to a custom page but the code keeps causing a fatal error.

I am using buddypress 12.0 RC1 for testing

 function bp_custom_avatar_shortcode() {
    if (!(int) bp_get_option('bp-disable-avatar-uploads')) {
        ob_start();
        ?>
        <form action="" method="post" id="avatar-upload-form" class="standard-form" enctype="multipart/form-data">
            <?php if ('upload-image' == bp_get_avatar_admin_step()) : ?>
                <?php wp_nonce_field('bp_avatar_upload'); ?>
                <p><?php _e('Click below to select a JPG, GIF, or PNG format photo from your computer and then click \'Upload Image\' to proceed.', 'buddypress'); ?></p>
                <p id="avatar-upload">
                    <label for="file" class="bp-screen-reader-text"><?php _e('Select an image', 'buddypress'); ?></label>
                    <input type="file" name="file" id="file" />
                    <input type="submit" name="upload" id="upload" value="<?php esc_attr_e('Upload Image', 'buddypress'); ?>" />
                    <input type="hidden" name="action" id="action" value="bp_avatar_upload" />
                </p>
                <?php if (bp_get_user_has_avatar()) : ?>
                    <p><?php _e("If you'd like to delete your current profile photo but not upload a new one, please use the delete profile photo button.", 'buddypress'); ?></p>
                    <p><a class="button edit" href="<?php bp_avatar_delete_link(); ?>"><?php _e('Delete My Profile Photo', 'buddypress'); ?></a></p>
                <?php endif; ?>
            <?php endif; ?>
            <?php if ('crop-image' == bp_get_avatar_admin_step()) : ?>
                <h5><?php _e('Crop Your New Profile Photo', 'buddypress'); ?></h5>
                <img src="<?php bp_avatar_to_crop(); ?>" id="avatar-to-crop" class="avatar" alt="<?php esc_attr_e('Profile photo to crop', 'buddypress'); ?>" />
                <div id="avatar-crop-pane">
                    <img src="<?php bp_avatar_to_crop(); ?>" id="avatar-crop-preview" class="avatar" alt="<?php esc_attr_e('Profile photo preview', 'buddypress'); ?>" />
                </div>
                <input type="submit" name="avatar-crop-submit" id="avatar-crop-submit" value="<?php esc_attr_e('Crop Image', 'buddypress'); ?>" />
                <input type="hidden" name="image_src" id="image_src" value="<?php bp_avatar_to_crop_src(); ?>" />
                <input type="hidden" id="x" name="x" />
                <input type="hidden" id="y" name="y" />
                <input type="hidden" id="w" name="w" />
                <input type="hidden" id="h" name="h" />
                <?php wp_nonce_field('bp_avatar_cropstore'); ?>
            <?php endif; ?>
        </form>
        <?php
        bp_avatar_get_templates();
        $output = ob_get_clean();
        return $output;
    } else {
        return '<p>' . __('Your profile photo will be used on your profile and throughout the site. To change your profile photo, please create an account with <a href="https://gravatar.com">Gravatar</a> using the same email address as you used to register with this site.', 'buddypress') . '</p>';
    }
}
add_shortcode('change-bp-profile-avatar', 'bp_custom_avatar_shortcode'); 

I also tried

 function bp_custom_avatar_shortcode() {
    // Check if BuddyPress is active and avatar uploads are enabled
    if (!bp_is_active() || (int) bp_get_option('bp-disable-avatar-uploads')) {
        return '<p>' . __('Your profile photo will be used on your profile and throughout the site. To change your profile photo, please create an account with <a href="https://gravatar.com">Gravatar</a> using the same email address as you used to register with this site.', 'buddypress') . '</p>';
    }

    // Start output buffering
    ob_start();

    // Display the appropriate form based on the avatar upload step
    if ('upload-image' === bp_get_avatar_admin_step()) {
        bp_get_template_part('members/single/profile/change-avatar/upload-image');
    } elseif ('crop-image' === bp_get_avatar_admin_step()) {
        bp_get_template_part('members/single/profile/change-avatar/crop-image');
    }

    // Capture the buffered output
    $output = ob_get_clean();

    // Return the output
    return $output;
}

add_shortcode('change-bp-profile-avatar', 'bp_custom_avatar_shortcode');