Minecraft Nether Crash

I have a rather large issue that I do not know exactly whether or not it is a bug or not. Attached is a log file of a server I ran to log the error into a txt file. I go into the nether and the entire game crashes every time. I have tried restarting my computer. I even attempted to troubleshoot by using [MCC Tool Chest PE|http://mcctoolchest.com/Download] to convert the world to Java Minecraft. The world worked fine enough for a converted minecraft world which is imperfect. 

I have a nether highway in the nether so the nether is an important feature to the world. I have no clue as to whether or not this is a bug, but decided to post the issue here to find out. 

Here is a link to the world that displayed the issue: http://www.mediafire.com/file/vv6ifjwwo37o73g/Justicecraft.mcworld/file