Error Accessing Lesson after Upgrade from 1.9.4 to 2.7 {$a->নাম} - {$a->তারিখ} দ্বারা Number of replies: 0 Just upgraded moole from 1.9.4 to 2.7.14, upgrades seemed worked alright so far, except for when I try to open a lesson, it shows error. Debugging info shows রেটিং এর গড়: - Permalink উত্তর