during generating sitemap i get errors in log:
DEPRECATED: Creation of dynamic property Image::$encwebpath is deprecated in /home/maysfdto/www/gallery/zp-core/classes/class-image.php on line 210
DEPRECATED: Creation of dynamic property Image::$imagetype is deprecated in /home/maysfdto/www/gallery/zp-core/classes/class-image.php on line 220

the same error is thrown since I updated the deprecated function newImage to Image::newImage in the template (zpbase)
how to solve it?

Those are deprecations and no "errors". That's an internal thing you have to wait until Zenphoto 1.6.1 is released.