Function Array Warnings

I used WP Clone to transfer a development site to live deployment: http://www.appalmad.org.

Everything seemed to go well, but when I load the site, I get these warnings at the top:

Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘WR_CF_Init_Post_Type::main_feed_wr_cf_post_type’ was given in /home/appalmad/htdocs/wp-includes/plugin.php on line 213

Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘WR_CF_Init_Post_Type::main_feed_wr_cfsb_post_type’ was given in /home/appalmad/htdocs/wp-includes/plugin.php on line 213

Warning: array_key_exists() [function.array-key-exists]: The second argument should be either an array or an object in /home/appalmad/htdocs/wp-content/plugins/insert-html-snippet/direct_call.php on line 11

Warning: array_keys() [function.array-keys]: The first argument should be an array in /home/appalmad/htdocs/wp-includes/class-wp.php on line 467

Also, some characters, such as em-dashes are now question marks.

Any thoughts on what might be happening here?

https://ww.wp.xz.cn/plugins/wp-clone-by-wp-academy/