Error "Run vaultQuery contractStateType: com.template.contract.SellOrderContract$SellOrderState"

[Arth-Ro]

Since I upgraded to v4.0 I get an error :

When I run run vaultQuery contractStateType: com.template.contract.SellOrderContract$SellOrderState

If there are no SellOrderStates in the vault everything is fine I get the List with no states.
If there is one I get : RPC failed: java.lang.IllegalStateException: Jackson didn't provide serialisers for [ISIN]

And ISIN is just a String defined in the state.

Once again this was working in v3.2

To reproduce :

• Start a node with corda release v4.
• open the node's shell,
• without commiting any state : run vaultQuery contractStateType:
  -> should return an empty set
• run a flow that will commit a state to the vault (ideally with a String argument)
• run vaultQuery contractStateType:
  -> That should return the serialization issue

gradle files : 
   buildscript {
      ext {
        corda_release_group = 'net.corda'
        corda_release_version = '4.0'
        corda_gradle_plugins_version = '4.0.42'
        kotlin_version = '1.2.71'
        junit_version = '4.12'
        quasar_version = '0.7.10'
        spring_boot_version = '2.0.2.RELEASE'
        spring_boot_gradle_plugin_version = '2.0.2.RELEASE'
        slf4j_version = '1.7.25'
        log4j_version = '2.11.2'
        corda_platform_version = '4'
    }

    repositories {
        mavenCentral()
        jcenter()
        maven {
            url 'https://ci-artifactory.corda.r3cev.com/artifactory/corda-releases'
        }
        mavenLocal()
    }

    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "net.corda.plugins:cordapp:$corda_gradle_plugins_version"
        classpath "net.corda.plugins:cordformation:$corda_gradle_plugins_version"
        classpath "net.corda.plugins:quasar-utils:$corda_gradle_plugins_version"
    }
 }

 allprojects {
    apply plugin: 'kotlin'

    repositories {
        jcenter()
        mavenCentral()
        maven { url 'https://ci-artifactory.corda.r3cev.com/artifactory/corda-releases' }
        maven { url 'https://jitpack.io' }
        mavenLocal()
     }

    configurations {
        compile {
            // We want to use SLF4J's version of these bindings: jcl-over-slf4j
            // Remove any transitive dependency on Apache's version.
            exclude group: 'commons-logging', module: 'commons-logging'
        }
    }

//    tasks.withType(JavaCompile) {
//        options.compilerArgs << "-parameters" // Required for shell commands.
//    }

    jar {
        // CorDapps do not configure a Node's logging.
        exclude '**/log4j2*.xml'
    }
 }

 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile

 apply plugin: 'kotlin'
 apply plugin: 'net.corda.plugins.cordapp'

 jar.baseName = "cordapp-liquidshare-contracts"

 cordapp {
    targetPlatformVersion corda_platform_version.toInteger()
    minimumPlatformVersion corda_platform_version.toInteger()
    contract {
        name "Liquidshare CorDapp"
        vendor "Liquidshare"
        licence "Apache License, Version 2.0"
        versionId 1
    }
 }

 dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"

    // Corda dependencies.
    cordaCompile "$corda_release_group:corda-core:$corda_release_version"

    testCompile "$corda_release_group:corda-node-driver:$corda_release_version"
 }


 tasks.withType(KotlinCompile) {
    kotlinOptions {
        languageVersion = "1.2"
        apiVersion = "1.2"
        jvmTarget = "1.8"
        javaParameters = true   // Useful for reflection.
    }
 }
`