Fatal error: Uncaught ArgumentCountError: Too few arguments to function get_month_link(), 0 passed in /home/site2015/okadamichi.sin-gen.jp/public_html/wp-content/themes/lionblog/functions.php on line 1921 and exactly 2 expected in /home/site2015/okadamichi.sin-gen.jp/public_html/wp-includes/link-template.php:483 Stack trace: #0 /home/site2015/okadamichi.sin-gen.jp/public_html/wp-content/themes/lionblog/functions.php(1921): get_month_link() #1 /home/site2015/okadamichi.sin-gen.jp/public_html/wp-content/themes/lionblog/header.php(21): fit_ogp() #2 /home/site2015/okadamichi.sin-gen.jp/public_html/wp-includes/template.php(688): require_once('/home/site2015/...') #3 /home/site2015/okadamichi.sin-gen.jp/public_html/wp-includes/template.php(647): load_template('/home/site2015/...', true) #4 /home/site2015/okadamichi.sin-gen.jp/public_html/wp-includes/general-template.php(45): locate_template(Array, true) #5 /home/site2015/okadamichi.sin-gen.jp/public_html/wp-content/themes/lionblog/archive.php(1): get_header() #6 /home/site2015/ in /home/site2015/okadamichi.sin-gen.jp/public_html/wp-includes/link-template.php on line 483