sermon browser error NEXT PAGE error WILL PAY$$

I am developing my site and am even willing to PAY someone who can resolve this error

https://75.125.59.6/~fumcfarm/listen-in/

when you click “next page” you get this error

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Warning: preg_match() expects parameter 2 to be string, object given in /home/fumcfarm/public_html/wp-includes/post-template.php on line 199

Catchable fatal error: Object of class stdClass could not be converted to string in /home/fumcfarm/public_html/wp-includes/post-template.php on line 213
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I am assuming it is the “wp_pager” tag in my template that is causing this plug-in to NOT work correctly, because other templates work fine. HELP! HELP!

Thanks everyone.