I have this issue now after updating to 5.2.
Warning: getimagesize(/home/newwhite/public_html/policedepartment/wp-content/plugins/wp-forecast//icons/ .gif): failed to open stream: No such file or directory in /home/newwhite/public_html/policedepartment/wp-content/plugins/wp-forecast/wp-forecast-show.php on line 413
Warning: getimagesize(/home/newwhite/public_html/policedepartment/wp-content/plugins/wp-forecast//icons/ .gif): failed to open stream: No such file or directory in /home/newwhite/public_html/policedepartment/wp-content/plugins/wp-forecast/wp-forecast-show.php on line 491