"The game crashed whilst ticking entity
The game crashed whilst ticking entity
Error: java.lang.NullPointerException: Ticking entity"

Upon loading the world, if the game is not paused it will load the player and begin to render everything. Once everything renders it will crash to desktop and the launcher reopens, displaying the above error. If the game is paused the moment the player appears, the game will remain running until un-paused, then the game will crash.

Snapshot 19w08b is being used on a world created in the 1.13.2 release.

I attempted to duplicate the world within my save file to circumvent the problem. This worked initially as I was able to access the world, move my character, and place blocks. I then proceeded to exit the save and reenter to guarantee the save was functional, but then the problem occurred again.

Additional Information:
I have been having trouble with invisible entities. The first instance was after initiating a village raid I was killed in the village. Upon quickly returning to the village there were no villagers, illagers, nor my dropped items. I did regain 7 experience levels at the location of my death, however. I then exited the save and reentered it whereupon all previously mentioned entities were present. Once the raid was staved off I switched into creative mode and began building in the village. As I built, I discovered locations that would not allow me to place blocks. The blocks would appear for an instant then disappear. After reloading the save again, illagers appeared in the spots that I wasn't able to build in. Once they were dealt with I could then place blocks in those locations.
The same issue occurred at my personal building location where at two different points I couldn't place blocks in a vertical 2X2. When I created the duplicate save, in one of these locations a cow appeared and I was then able to place blocks there again. The other location is still hindered. I'm assuming there may be an invisible sheep there due to its proximity to my sheep pen.

I am including the crash reports from both the original world and the copied world.
World Name: "Bananas and Bell Peppers"