The error is due to ....
There is not enough disk space to install what you want to install. (Can be storage space on the device itself or the partition does cydia or both)
Most Cydia tweaks weigh very little, but there are some that if they have a considerable size, how Winterboard themes or similar, if you want to install and you have space you can try to release megs device removing applications, photos or videos .
If the problem is in the partition try clearing junk files that accumulate on the iPhone, using iFile follow this route to get rid of them (/ var / mobile / Library / iFile / Trash)