generator-jhipster: Cassandra backend tests failures

{
  "generator-jhipster": {
    "applicationType": "monolith",
    "baseName": "sampleReactCassandraSessionRedis",
    "packageName": "io.github.jhipster.sample",
    "packageFolder": "io/github/jhipster/sample",
    "serverPort": "8080",
    "authenticationType": "session",
    "cacheProvider": "redis",
    "enableHibernateCache": false,
    "websocket": false,
    "databaseType": "cassandra",
    "devDatabaseType": "cassandra",
    "prodDatabaseType": "cassandra",
    "searchEngine": false,
    "messageBroker": false,
    "serviceDiscoveryType": false,
    "buildTool": "maven",
    "enableSwaggerCodegen": false,
    "rememberMeKey": "YourJWTSecretKeyWasReplacedByThisMeaninglessTextByTheJHipsterInfoCommandForObviousSecurityReasons",
    "embeddableLaunchScript": false,
    "useSass": true,
    "clientPackageManager": "npm",
    "clientFramework": "react",
    "clientTheme": "none",
    "clientThemeVariant": "",
    "testFrameworks": ["gatling", "protractor"],
    "jhiPrefix": "jhi",
    "entitySuffix": "",
    "dtoSuffix": "DTO",
    "otherModules": [],
    "enableTranslation": true,
    "nativeLanguage": "en",
    "languages": ["en", "fr"],
    "blueprints": [],
    "jhipsterVersion": "6.6.0",
    "creationTimestamp": 1579850992835
  }
}

entity CassBankAccount {
  userId UUID,
  name String required,
  bankNumber Integer,
  agencyNumber Long,
  lastOperationDuration Float,
  meanOperationDuration Double,
  balance BigDecimal required,
  lastOperationDate Date,
  active Boolean,
  picture ByteBuffer required,
  operationsFile ByteBuffer,
  accountType AccountTypeEnum
}
entity CassTestEntity {
  stringField String,
  stringRequiredField String required,
  stringMinlengthField String minlength(0),
  stringMaxlengthField String maxlength(20),
  stringPatternField String pattern(/^[a-zA-Z0-9]*$/),
  integerField Integer,
  integerRequiredField Integer required,
  integerMinField Integer min(0),
  integerMaxField Integer max(100),
  longField Long,
  longRequiredField Long required,
  longMinField Long min(0),
  longMaxField Long max(100),
  floatField Float,
  floatRequiredField Float required,
  floatMinField Float min(0),
  floatMaxField Float max(100),
  doubleRequiredField Double required,
  doubleMinField Double min(0),
  doubleMaxField Double max(100),
  bigDecimalRequiredField BigDecimal required,
  bigDecimalMinField BigDecimal min(0),
  bigDecimalMaxField BigDecimal max(100),
  dateField Date,
  dateRequiredField Date required,
  zonedDateTimeField ZonedDateTime,
  zonedDateTimeRequiredField ZonedDateTime required,
  booleanField Boolean,
  booleanRequiredField Boolean required,
  picture ByteBuffer required,
  operationsFile ByteBuffer
}
entity CassTestMapstructEntity {
  stringField String,
  stringRequiredField String required,
  stringMinlengthField String minlength(0),
  stringMaxlengthField String maxlength(20),
  stringPatternField String pattern(/^[a-zA-Z0-9]*$/),
  integerField Integer,
  integerRequiredField Integer required,
  integerMinField Integer min(0),
  integerMaxField Integer max(100),
  longField Long,
  longRequiredField Long required,
  longMinField Long min(0),
  longMaxField Long max(100),
  floatField Float,
  floatRequiredField Float required,
  floatMinField Float min(0),
  floatMaxField Float max(100),
  doubleRequiredField Double required,
  doubleMinField Double min(0),
  doubleMaxField Double max(100),
  bigDecimalRequiredField BigDecimal required,
  bigDecimalMinField BigDecimal min(0),
  bigDecimalMaxField BigDecimal max(100),
  dateField Date,
  dateRequiredField Date required,
  zonedDateTimeField ZonedDateTime,
  zonedDateTimeRequiredField ZonedDateTime required,
  booleanField Boolean,
  booleanRequiredField Boolean required,
  picture ByteBuffer required,
  operationsFile ByteBuffer
}
entity CassTestServiceClassEntity {
  stringField String,
  stringRequiredField String required,
  stringMinlengthField String minlength(0),
  stringMaxlengthField String maxlength(20),
  stringPatternField String pattern(/^[a-zA-Z0-9]*$/),
  integerField Integer,
  integerRequiredField Integer required,
  integerMinField Integer min(0),
  integerMaxField Integer max(100),
  longField Long,
  longRequiredField Long required,
  longMinField Long min(0),
  longMaxField Long max(100),
  floatField Float,
  floatRequiredField Float required,
  floatMinField Float min(0),
  floatMaxField Float max(100),
  doubleRequiredField Double required,
  doubleMinField Double min(0),
  doubleMaxField Double max(100),
  bigDecimalRequiredField BigDecimal required,
  bigDecimalMinField BigDecimal min(0),
  bigDecimalMaxField BigDecimal max(100),
  dateField Date,
  dateRequiredField Date required,
  zonedDateTimeField ZonedDateTime,
  zonedDateTimeRequiredField ZonedDateTime required,
  booleanField Boolean,
  booleanRequiredField Boolean required,
  picture ByteBuffer required,
  operationsFile ByteBuffer
}
entity CassTestServiceImplEntity {
  stringField String,
  stringRequiredField String required,
  stringMinlengthField String minlength(0),
  stringMaxlengthField String maxlength(20),
  stringPatternField String pattern(/^[a-zA-Z0-9]*$/),
  integerField Integer,
  integerRequiredField Integer required,
  integerMinField Integer min(0),
  integerMaxField Integer max(100),
  longField Long,
  longRequiredField Long required,
  longMinField Long min(0),
  longMaxField Long max(100),
  floatField Float,
  floatRequiredField Float required,
  floatMinField Float min(0),
  floatMaxField Float max(100),
  doubleRequiredField Double required,
  doubleMinField Double min(0),
  doubleMaxField Double max(100),
  bigDecimalRequiredField BigDecimal required,
  bigDecimalMinField BigDecimal min(0),
  bigDecimalMaxField BigDecimal max(100),
  dateField Date,
  dateRequiredField Date required,
  zonedDateTimeField ZonedDateTime,
  zonedDateTimeRequiredField ZonedDateTime required,
  booleanField Boolean,
  booleanRequiredField Boolean required,
  picture ByteBuffer required,
  operationsFile ByteBuffer
}
enum AccountTypeEnum {
  STANDARD,
  PREMIUM
}

dto CassBankAccount, CassTestMapstructEntity with mapstruct
service CassBankAccount, CassTestMapstructEntity, CassTestServiceImplEntity with serviceImpl
service CassTestServiceClassEntity with serviceClass
angularSuffix CassBankAccount with mySuffix
filter CassTestServiceClassEntity, CassTestServiceImplEntity