Contao CMS expert developer required (project 70% complete)

We require an expert in the content management system 'Contao'. we have a project that is 70% complete that we are having some issues with, namely the following errors: Fatal error: Uncaught exception Exception with message Query error: Table 'tl_page' was not locked with LOCK TABLES (SELECT * FROM tl_page WHERE (id=0 OR alias='home') AND (start='' OR start<1321350209) AND (stop='' OR stop>1321350209) AND published=1) thrown in /var/www/vhosts/[login to view URL] on line 677 #0 /var/www/vhosts/[login to view URL](624): Database_Statement->query() #1 /var/www/vhosts/[login to view URL](97): Database_Statement->execute(0, 'home') #2 /var/www/vhosts/[login to view URL](319): Index->run() #3 {main} The developer we had working on this project is either unwilling or unable to fix this issue and complete the site. We have been told that the development platform is fine and that some code in the site is causing the problem so we need an expert to come in and repair this problem and also finish updating the content ready for live. Please DO NOT bid on the project unless you are confident that you can fix the problem and that you are an expert and familiar with contao CMS. Any questions, please do not hesitate to ask.