So your laminate is still wet and the resin uncured. There aren't any other symptoms.
This can happen for the following reasons
The resin and catalyst haven't been mixed thoroughly enough
You have used the wrong catalyst for example summer catalyst in winter
You haven't added enough catalyst to cope with the temperature
What do you do?
Check you are using the right catalyst for the season/temperature
Catalyse another batch of resin with increased level of catalyst (double if necessary)
Roll this new batch vigorously in to the deck resin
always check the temperature before adding hardener
always check the mixing chart, not once but twice