block_state?

So, i'm trying to create particles in 1.21.1, but i encounter this one thing i never seen before:
[20:11:43] [Server thread/ERROR]: Failed to load function event:emerge_animation
java.util.concurrent.CompletionException: java.lang.IllegalArgumentException: Whilst parsing command on line 4: Can't parse particle options: No key block_state in MapLike[{}]
    at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315) ~[?:?]
    at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320) ~[?:?]
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1770) ~[?:?]
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1760) ~[?:?]
    at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387) ~[?:?]
    at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312) ~[?:?]
    at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843) ~[?:?]
    at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808) ~[?:?]
    at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188) ~[?:?]
Caused by: java.lang.IllegalArgumentException: Whilst parsing command on line 4: Can't parse particle options: No key block_state in MapLike[{}]
    at knot/net.minecraft.class_2158.method_9195(class_2158.java:80) ~[client-intermediary.jar:?]
    at knot/net.minecraft.class_5349.method_29451(class_5349.java:89) ~[client-intermediary.jar:?]
    at java.base/java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1768) ~[?:?]
    ... 6 more
Whats this?
4: execute if score #animation timer matches 0..20 run particle minecraft:block {"block_state":{"Name":"minecraft:dirt"}} ~ 
~-1 ~ 2 0 2 1 20