Tellraw Command Causes Crash

I put these commands into command blocks, ran them, then clicked on the option that came up, and the game crashed.

Command 1:

/tellraw @a {"text":"","extra":[{"text":"Click 'this' to reset the map","color":"red","clickEvent":{"action":"run_command","value":"/setblock -17 57 -26 redstone_block 0 replace"}}]}

Command 2:

/tellraw @a {"text":"","extra":[{"text":"Our Channel: www.youtube.com/user/thejockeystudios/","color":"gold","clickEvent":{"action":"open_url","value":"www.youtube.com/user/thejockeystudios/"}}]}

I attached the crash report generated after running the second command.

Description: Updating screen events

java.lang.NullPointerException: Updating screen events
	at bml.a(SourceFile:170)
	at bnt.d(SourceFile:242)
	at bml.d(SourceFile:135)
	at bnt.k(SourceFile:219)
	at bjs.p(SourceFile:1432)
	at bjs.ah(SourceFile:843)
	at bjs.f(SourceFile:797)
	at net.minecraft.client.main.Main.main(SourceFile:121)