Was trying to use testforblock to check for certain items in a dispenser but is not working as intended.

command: /testforblock ~ ~-1 ~ minecraft:dispenser 1 {Items:[

{Slot:0b,Count:1b,id:minecraft:stone,Damage:0s}

]} => result: Data tag parsing failed: Expected '}' but got ':' at id:minecraft: <-- [HERE]

command: /testforblock ~ ~-1 ~ minecraft:dispenser 1 {Items:[

{Slot:0b,Count:1b,minecraft:stone,Damage:0s}

]} => result: The block at X Y Z did not have required NBT keys

tested the same command in 1.11.2 and works without issue.