# Cannot find class 'ConveRTTokenizer'

**URL:** <https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780>\
**Category:** Rasa Open Source\
**Created:** [February 14, 2020, 9:38am UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780 "2020-02-14T09:38:48Z")\
**Posts on this page:** 15\
**Page:** 1

<div class="post-metadata">

**Author:** ![tiziano](https://avatars.discourse-cdn.com/v4/letter/t/e19adc/32.png) [@tiziano](https://forum.rasa.com/u/tiziano)\
**Post date:** [February 14, 2020, 9:38am UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/1 "2020-02-14T09:38:48Z")

</div>

Hi,

I’m trying to train a model using ConveRT from my Ubuntu server, but getting this error:

```
rasa-worker_1 | Traceback (most recent call last):
rasa-worker_1 | File "/build/lib/python3.6/site-packages/rasa/server.py", line 725, in train
rasa-worker_1 | force_training=rjs.get("force", False),
rasa-worker_1 | File "/usr/local/lib/python3.6/asyncio/coroutines.py", line 110, in __next__
rasa-worker_1 | return self.gen.send(None)
rasa-worker_1 | File "/build/lib/python3.6/site-packages/rasa/train.py", line 97, in train_async
rasa-worker_1 | kwargs,
rasa-worker_1 | File "/usr/local/lib/python3.6/asyncio/coroutines.py", line 110, in __next__
rasa-worker_1 | return self.gen.send(None)
rasa-worker_1 | File "/build/lib/python3.6/site-packages/rasa/train.py", line 184, in _train_async_internal
rasa-worker_1 | kwargs=kwargs,
rasa-worker_1 | File "/usr/local/lib/python3.6/asyncio/coroutines.py", line 110, in __next__
rasa-worker_1 | return self.gen.send(None)
rasa-worker_1 | File "/build/lib/python3.6/site-packages/rasa/train.py", line 241, in _do_training
rasa-worker_1 | persist_nlu_training_data=persist_nlu_training_data,
rasa-worker_1 | File "/usr/local/lib/python3.6/asyncio/coroutines.py", line 110, in __next__
rasa-worker_1 | return self.gen.send(None)
rasa-worker_1 | File "/build/lib/python3.6/site-packages/rasa/train.py", line 470, in _train_nlu_with_validated_data
rasa-worker_1 | persist_nlu_training_data=persist_nlu_training_data,
rasa-worker_1 | File "/usr/local/lib/python3.6/asyncio/coroutines.py", line 110, in __next__
rasa-worker_1 | return self.gen.send(None)
rasa-worker_1 | File "/build/lib/python3.6/site-packages/rasa/nlu/train.py", line 74, in train
rasa-worker_1 | trainer = Trainer(nlu_config, component_builder)
rasa-worker_1 | File "/build/lib/python3.6/site-packages/rasa/nlu/model.py", line 144, in __init__
rasa-worker_1 | components.validate_requirements(cfg.component_names)
rasa-worker_1 | File "/build/lib/python3.6/site-packages/rasa/nlu/components.py", line 38, in validate_requirements
rasa-worker_1 | component_class = registry.get_component_class(component_name)
rasa-worker_1 | File "/build/lib/python3.6/site-packages/rasa/nlu/registry.py", line 180, in get_component_class
rasa-worker_1 | raise ModuleNotFoundError(exception_message)
rasa-worker_1 | ModuleNotFoundError: Cannot find class 'ConveRTTokenizer' from global namespace. Please check that there is no typo in the class name and that you have imported the class into the global namespace.

```

Does anybody know how to help me?

---

<div class="post-metadata">

**Author:** ![Ghostvv](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/ghostvv/32/211_2.png) [@Ghostvv](https://forum.rasa.com/u/Ghostvv)\
**Post date:** [February 14, 2020, 4:49pm UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/2 "2020-02-14T16:49:07Z")

</div>

it seems that you’re using a wrong version of rasa

---

<div class="post-metadata">

**Author:** ![tiziano](https://avatars.discourse-cdn.com/v4/letter/t/e19adc/32.png) [@tiziano](https://forum.rasa.com/u/tiziano)\
**Post date:** [February 14, 2020, 5:02pm UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/3 "2020-02-14T17:02:16Z")

</div>

I’m using `rasa` and `rasa-sdk` 1.6.1

---

<div class="post-metadata">

**Author:** ![tiziano](https://avatars.discourse-cdn.com/v4/letter/t/e19adc/32.png) [@tiziano](https://forum.rasa.com/u/tiziano)\
**Post date:** [February 17, 2020, 9:11am UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/4 "2020-02-17T09:11:04Z")

</div>

Can you please elaborate a bit more? What version of rasa should I use?

---

<div class="post-metadata">

**Author:** ![Ghostvv](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/ghostvv/32/211_2.png) [@Ghostvv](https://forum.rasa.com/u/Ghostvv)\
**Post date:** [February 17, 2020, 1:38pm UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/5 "2020-02-17T13:38:51Z")

</div>

`ConveRTTokenizer` was added in version `1.7`

---

<div class="post-metadata">

**Author:** ![tiziano](https://avatars.discourse-cdn.com/v4/letter/t/e19adc/32.png) [@tiziano](https://forum.rasa.com/u/tiziano)\
**Post date:** [February 17, 2020, 2:04pm UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/6 "2020-02-17T14:04:27Z")

</div>

Ok, thank you! I’ll try updating Rasa.

Could you help me also with [this](http://forum.rasa.com/t/comparing-policies-guide-not-clear/24901)?

---

<div class="post-metadata">

**Author:** ![tiziano](https://avatars.discourse-cdn.com/v4/letter/t/e19adc/32.png) [@tiziano](https://forum.rasa.com/u/tiziano)\
**Post date:** [February 19, 2020, 4:08pm UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/7 "2020-02-19T16:08:14Z")

</div>

I updated rasa to the last version, but I’m still getting the same error…

---

<div class="post-metadata">

**Author:** ![tiziano](https://avatars.discourse-cdn.com/v4/letter/t/e19adc/32.png) [@tiziano](https://forum.rasa.com/u/tiziano)\
**Post date:** [February 24, 2020, 10:16am UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/8 "2020-02-24T10:16:05Z")

</div>

Anybody please?

---

<div class="post-metadata">

**Author:** ![tiziano](https://avatars.discourse-cdn.com/v4/letter/t/e19adc/32.png) [@tiziano](https://forum.rasa.com/u/tiziano)\
**Post date:** [February 26, 2020, 11:09am UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/9 "2020-02-26T11:09:03Z")

</div>

I found out that if I use only

```
language: "en"

pipeline: "pretrained_embeddings_convert"

```

it works without errors, while if I specify the whole components:

```
language: "en"

pipeline:
- name: "ConveRTTokenizer"
- name: "ConveRTFeaturizer"
- name: "EmbeddingIntentClassifier"

```

it gives me the error that I put above. Does anybody know why is that? @Ghostvv?

---

<div class="post-metadata">

**Author:** ![Ghostvv](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/ghostvv/32/211_2.png) [@Ghostvv](https://forum.rasa.com/u/Ghostvv)\
**Post date:** [February 26, 2020, 11:28am UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/10 "2020-02-26T11:28:43Z")

</div>

Are you sure you use the same environment with correct rasa version?

---

<div class="post-metadata">

**Author:** ![tiziano](https://avatars.discourse-cdn.com/v4/letter/t/e19adc/32.png) [@tiziano](https://forum.rasa.com/u/tiziano)\
**Post date:** [February 26, 2020, 11:46am UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/11 "2020-02-26T11:46:27Z")

</div>

![image](https://europe1.discourse-cdn.com/flex013/uploads/rasa/original/2X/2/2df2910e15e02e7766817b55edc8489138815c72.png)What you mean by same environment?

---

<div class="post-metadata">

**Author:** ![tiziano](https://avatars.discourse-cdn.com/v4/letter/t/e19adc/32.png) [@tiziano](https://forum.rasa.com/u/tiziano)\
**Post date:** [March 2, 2020, 9:30am UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/12 "2020-03-02T09:30:53Z")

</div>

up

---

<div class="post-metadata">

**Author:** ![erohmensing](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/erohmensing/32/1789_2.png) [@erohmensing](https://forum.rasa.com/u/erohmensing)\
**Post date:** [March 2, 2020, 3:41pm UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/13 "2020-03-02T15:41:21Z")

</div>

@tiziano can you provide your docker-compose file?

---

<div class="post-metadata">

**Author:** ![tiziano](https://avatars.discourse-cdn.com/v4/letter/t/e19adc/32.png) [@tiziano](https://forum.rasa.com/u/tiziano)\
**Post date:** [March 2, 2020, 3:42pm UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/14 "2020-03-02T15:42:53Z")

</div>

Sure, here it is:

```
version: "3.4"

x-database-credentials: &database-credentials
  DB_HOST: "db"
  DB_PORT: "5432"
  DB_USER: "${DB_USER:-admin}"
  DB_PASSWORD: "${DB_PASSWORD}"
  DB_LOGIN_DB: "${DB_LOGIN_DB:-rasa}"

x-rabbitmq-credentials: &rabbitmq-credentials
  RABBITMQ_HOST: "rabbit"
  RABBITMQ_USERNAME: "user"
  RABBITMQ_PASSWORD: ${RABBITMQ_PASSWORD}

x-redis-credentials: &redis-credentials
  REDIS_HOST: "redis"
  REDIS_PORT: "6379"
  REDIS_PASSWORD: ${REDIS_PASSWORD}
  REDIS_DB: "1"

x-duckling-credentials: &duckling-credentials
  RASA_DUCKLING_HTTP_URL: "http://duckling:8000"

x-rasax-credentials: &rasax-credentials
  LOCAL_MODE: "false"
  RASA_X_HOST: "http://rasa-x:5002"
  RASA_X_TOKEN: ${RASA_X_TOKEN}
  JWT_SECRET: ${JWT_SECRET}
  RASA_USER_APP: "http://app:5055"
  RASA_PRODUCTION_HOST: "http://rasa-production:5005"
  RASA_WORKER_HOST: "http://rasa-worker:5005"
  RASA_TOKEN: ${RASA_TOKEN}
  RASA_WORKER_TOKEN: ${RASA_TOKEN}

x-rasa-credentials: &rasa-credentials
  <<: *rabbitmq-credentials
  <<: *rasax-credentials
  <<: *database-credentials
  <<: *redis-credentials
  <<: *duckling-credentials
  RASA_TOKEN: ${RASA_TOKEN}
  RASA_MODEL_PULL_INTERVAL: 10
  RABBITMQ_QUEUE: "rasa_production_events"

x-rasa-services: &default-rasa-service
  restart: always
  image: "rasa/rasa:${RASA_VERSION}-full"
  expose:
    - "5005"
  command: >
    x
    --no-prompt
    --debug
    --production
    --config-endpoint http://rasa-x:5002/api/config?token=${RASA_X_TOKEN}
    --port 5005
    --jwt-method HS256
    --jwt-secret ${JWT_SECRET}
    --auth-token '${RASA_TOKEN}'
    --cors "*"
  depends_on:
    - rasa-x
    - rabbit
    - redis

services:
  action_server:
    image: pandasimg:latest
    volumes:
      - ./actions:/app/actions
  rasa-x:
    restart: always
    image: "rasa/rasa-x:${RASA_X_VERSION}"
    expose:
      - "5002"
    volumes:
      - ./models:/app/models
      - ./environments.yml:/app/environments.yml
      - ./credentials.yml:/app/credentials.yml
      - ./endpoints.yml:/app/endpoints.yml
      - ./logs:/logs
      - ./auth:/app/auth
    environment:
      <<: *database-credentials
      <<: *rasa-credentials
      SELF_PORT: "5002"
      DB_DATABASE: "${DB_DATABASE:-rasa}"
      RASA_MODEL_DIR: "/app/models"
      PASSWORD_SALT: ${PASSWORD_SALT}
      RABBITMQ_QUEUE: "rasa_production_events"
      RASA_X_USER_ANALYTICS: "0"
      SANIC_RESPONSE_TIMEOUT: "3600"
      METRICS_CONSENT: "${METRICS_CONSENT:-false}"
      UUID: "${UUID:-''}"
    depends_on:
      - db

  rasa-production:
    <<: *default-rasa-service
    environment:
      <<: *rasa-credentials
      RASA_ENVIRONMENT: "production"
      DB_DATABASE: "tracker"
      RASA_MODEL_SERVER: "http://rasa-x:5002/api/projects/default/models/tags/production"

  rasa-worker:
    <<: *default-rasa-service
    environment:
      <<: *rasa-credentials
      RASA_ENVIRONMENT: "worker"
      DB_DATABASE: "worker_tracker"
      RASA_MODEL_SERVER: "http://rasa-x:5002/api/projects/default/models/tags/production"

  app:
    restart: always
    image: "rasa/rasa-x-demo:${RASA_X_DEMO_VERSION}"
    expose:
      - "5055"
    depends_on:
      - rasa-production

  db:
    restart: always
    image: "bitnami/postgresql:11.3.0"
    expose:
      - "5432"
    environment:
      POSTGRESQL_USERNAME: "${DB_USER:-admin}"
      POSTGRESQL_PASSWORD: "${DB_PASSWORD}"
      POSTGRESQL_DATABASE: "${DB_DATABASE:-rasa}"
    volumes:
      - ./db:/bitnami/postgresql

  rabbit:
    restart: always
    image: "bitnami/rabbitmq:3.7.17"
    environment:
      RABBITMQ_HOST: "rabbit"
      RABBITMQ_USERNAME: "user"
      RABBITMQ_PASSWORD: ${RABBITMQ_PASSWORD}
      RABBITMQ_DISK_FREE_LIMIT: "{mem_relative, 0.1}"
    expose:
      - "5672"

  duckling:
    restart: always
    image: "rasa/duckling:latest"
    expose:
      - "8000"
    command: ["duckling-example-exe", "--no-access-log", "--no-error-log"]

  nginx:
    restart: always
    image: "rasa/nginx:${RASA_X_VERSION}"
    ports:
      - "80:8080"
      - "443:8443"
    volumes:
      - ./certs:/opt/bitnami/certs
      - ./terms:/opt/bitnami/nginx/conf/bitnami/terms
    depends_on:
      - rasa-x
      - rasa-production
      - app

  redis:
    restart: always
    image: "bitnami/redis:5.0.5"
    ports:
      - "6379:6379"
    environment:
      REDIS_PASSWORD: ${REDIS_PASSWORD}

  logger:
    restart: always
    image: "rasa/logger:${RASA_X_VERSION}"
    command: ["/bin/sh", "-c", "docker-compose logs --no-color -f > /logs/compose_`date '+%Y-%m-%d_%H:%M:%S'`.log"]
    volumes:
      - ./logs:/logs
      - ./.env/:/etc/rasa/.env
      - ./docker-compose.yml:/etc/rasa/docker-compose.yml
      - /var/run/docker.sock:/var/run/docker.sock
    working_dir: /etc/rasa
    depends_on:
      - nginx
      - duckling
```

---

<div class="post-metadata">

**Author:** ![erohmensing](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/erohmensing/32/1789_2.png) [@erohmensing](https://forum.rasa.com/u/erohmensing)\
**Post date:** [March 2, 2020, 5:31pm UTC](https://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/15 "2020-03-02T17:31:53Z")

</div>

Okay. This comment seems particularly weird: [Cannot find class 'ConveRTTokenizer'](http://forum.rasa.com/t/cannot-find-class-converttokenizer/24780/9)

I tried on my machine and could not replicate it.