コメントありがとうございます。
失礼しました。以下で表示されておりました。
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in ORMInvalidArgumentException.php line 169
at ORMInvalidArgumentException::invalidObject('EntityManager#persist()', array('law_company' => '会社名', 'law_manager' => '名前', 'law_zip01' => '000', 'law_zip02' => '0000', 'law_pref' => object(Pref), 'law_addr01' => '住所', ・・・・, 'law_term05' => 'あああ', 'law_term06' => 'あああ')) in EntityManager.php line 541
at EntityManager->persist(array('law_company' => '会社名', 'law_manager' => '名前', 'law_zip01' => '000', 'law_zip02' => '0000', 'law_pref' => object(Pref), 'law_addr01' => '住所', ・・・・, 'law_term05' => 'あああ', 'law_term06' => 'あああ')) in TradelawController.php line 63
at TradelawController->index(object(Application), object(Request))
at call_user_func_array(array(object(TradelawController), 'index'), array(object(Application), object(Request))) in HttpKernel.php line 144
at HttpKernel->handleRaw(object(Request), '1') in HttpKernel.php line 64
at HttpKernel->handle(object(Request), '1', true) in Application.php line 586
at Application->handle(object(Request)) in Application.php line 563
at Application->run() in index_dev.php line 110
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宜しくお願い致します。