Video clip replaced to after effects composition is in black

So whenever I do replace a 3-5secs clip to after effects composition. The first few clips are okay, but it's always the last clip usually that turns black. Any workarounds? It happens to any format videos though! I usually just export the clip and do the replacement inside after effects. But not this time, I must have the video clip from premiere pro directly since I'm testing an effect. It's been frustrating!