Got an error while opening Adobe Bridge from Adobe Photoshop

I have both Adobe PhotoShop and Adobe Bridge which are working fine. But I just got this error message while opening Bridge from PhotoShop (see screenshot below). I wondered why this happened because I could normally open Bridge from Photoshop. I can open Bridge separately but I wanted the old way.
Can someone help me resolve the issue?
Thanks.

Error
Error 2: PhotoShop is undefined.
Line :1
-> photoshop.invokeBridge (false, false, “);
