page.php not working in my website [closed]

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Fatal error: Uncaught Error: Call to undefined function woodmart_get_content_class() in /home/u9766796/public_html/wp-content/themes/woodmart/woodmart2/page.php:17 Stack trace: #0 /home/u9766796/public_html/wp-includes/template-loader.php(106): include() #1 /home/u9766796/public_html/wp-blog-header.php(19): require_once('/home/u9766796/...') #2 /home/u9766796/public_html/index.php(17): require('/home/u9766796/...') #3 {main} thrown in /home/u9766796/public_html/wp-content/themes/woodmart/woodmart2/page.php on line 17

I have shopping website but I’m new to WordPress and i downloaded All in One SEO plugin even though I have Yoast SEO on my site after that my site crashed and became inaccessible even if I removed the plugin from cpanel. I now get this page.php problem. How can I solve this problem and reopen my site?