If you are encountering the following error while trying to flash Gapps with your custom rom:
Error 70: Insufficient storage space available in System partition.
Here is the simple fix for the problem:
- Flash a smaller size version of the Gapps ROM via TWRP. Pick either Pico/Micro versions of the ram.
- For Nexus 5 and CM14/Lineage the Micro Version works just fine
- After installing the smaller version you can install the remaining apps via the Play Store