Query Error: SQLSTATE[HY093]: Invalid parameter number

Failed SQL: SELECT j.*, 
                       c.name as company_name, 
                       c.logo as company_logo,
                       cat.name_th as category_name,
                       cat.icon as category_icon
                FROM jobs j 
                LEFT JOIN companies c ON j.company_id = c.id 
                LEFT JOIN job_categories cat ON j.category_id = cat.id 
                WHERE j.status = 'published' 
                AND (j.expires_at IS NULL OR j.expires_at > NOW()) AND (j.title_th LIKE :keyword 
                          OR j.description_th LIKE :keyword 
                          OR j.requirements_th LIKE :keyword
                          OR c.name LIKE :keyword) ORDER BY 
                        CASE WHEN j.title_th LIKE :keyword_exact THEN 1 ELSE 2 END,
                        j.is_featured DESC, 
                        j.is_urgent DESC, 
                        j.published_at DESC LIMIT 20 OFFSET 0

Params: Array
(
    [:keyword] => %ช่างเชื่อม%
    [:keyword_exact] => %ช่างเชื่อม%
)