If you get error 70 with the nano package you have two alternatives. The first is to use the pico package. The second is to use a package of roughly the same vintage, like [GAPPS] [7.1.2] [ARM/ARM64] [July 25th] Beans GApps . The problem you're encountering is that the app sizes have increased in the intervening years between the release of this ROM and now, and unfortunately the system partition of the A2109 is too small for it.
Based on the link I provided, you'd want the mini package, as the apps in the full package - except the camera most likely - can all be downloaded direct from the Play Store.
well I solved the issue of the Gapps ... but I have a question, is it normal that it suddenly restarts with some apps? install firefox as a browser and I had to remove it because the tablet restarted. In addition, I also downloaded the plants vs zombies 2 and when I start it I have a black screen, something that did not happen before with the previous rom that I had which I do not remember what it is because the tablet was brought to me after so much in very bad condition and this before I remember that I had a boot image of a record player that put the rom but I don't remember what it was called
It's not normal. I assume you put the ROM on the device, but did you wipe data and cache? If you didn't properly wipe the tablet that could be the source of your problems, in which case you want to wipe the tablet and try again.