gautam-vaibhav302 commented on issue #37491:
URL: https://github.com/apache/superset/issues/37491#issuecomment-3945882909
It is fixed now. The main issue was with the Celery worker and the cache
server being not configured.
I used Redis for the cache storage server that server the worker for
generating & storing the screenshot for the given cache ID of the corresponding
dashboard.
Below are the some changes that i made in the superset/config.py file.
```
class CeleryConfig: # pylint: disable=too-few-public-methods
# Use Redis for Celery so async dashboard screenshot/PDF export can run.
# broker_url = "sqla+sqlite:///celerydb.sqlite"
broker_url = "redis://127.0.0.1:6379/0"
imports = (
"superset.sql_lab",
"superset.tasks.scheduler",
"superset.tasks.thumbnails",
"superset.tasks.cache",
"superset.tasks.slack",
)
# result_backend = "db+sqlite:///celery_results.sqlite"
result_backend = "redis://127.0.0.1:6379/1"
worker_prefetch_multiplier = 1
task_acks_late = False
task_annotations = {
"sql_lab.get_sql_results": {
"rate_limit": "100/s",
},
}
```
```
THUMBNAIL_CACHE_CONFIG: CacheConfig = {
# NullCache never persists screenshot payloads; dashboard PDF export will
# poll forever. Use Redis so screenshot status/bytes can be stored.
"CACHE_TYPE": "RedisCache",
"CACHE_REDIS_URL": "redis://127.0.0.1:6379/0",
"CACHE_DEFAULT_TIMEOUT": int(timedelta(days=7).total_seconds()),
"CACHE_NO_NULL_WARNING": True,
}
```
```
DEFAULT_FEATURE_FLAGS: dict[str, bool] = {
"THUMBNAILS": True,
"ENABLE_DASHBOARD_SCREENSHOT_ENDPOINTS": True,
"ENABLE_DASHBOARD_DOWNLOAD_WEBDRIVER_SCREENSHOT": True,
"PLAYWRIGHT_REPORTS_AND_THUMBNAILS": True,
}
```
Hope that helps.
And with that, I am finally Closing this issue.
Thanks everyone for being supportive in the community.
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