Tween not working in cocos creator

i am using multiple cc.tweens where i tween the position of a node or the opacity of a label. in the beginning of the game the all the tweens work fine but somewhere in between one of them (a position changing tween) stops working and then each time i start that tween it doesn’t work until i go to the next game or restart the app. please note that even out of all the position tweens only one doesn’t work.
i am using cocos creator ver 2.4.3.
can someone tell me how i can fix this?

Hi, Are you getting any errors?

no, just a badly working tween where the node shows up at the start position but doesn’t move to the destination position.

What if stopped previous tweens?