Cannot get list of entries: The resource could not be found (Contentful) - contentful

Question

I am trying to retrieve a list of entries based on category_type but I'm getting the exception below:
I/flutter ( 8486): Cannot get list of entries. Finished with error: {
I/flutter ( 8486): "sys": {
I/flutter ( 8486): "type": "Error",
I/flutter ( 8486): "id": "NotFound"
I/flutter ( 8486): },
I/flutter ( 8486): "message": "The resource could not be found.",
I/flutter ( 8486): "requestId": "883045ce-dcc2-4187-ab1d-28c57ad18756"
I/flutter ( 8486): }
I/flutter ( 8486): null
This is the calling code:
Future<List<Category>> getCategories() async {
try {
final entries = await _contentfulClient.getEntries<Category>(
params: {
'content_type': 'category',
'skip': '0',
'limit': '100',
'order': 'sys.createdAt',
},
);
return entries.items.asList();
} catch(exception){
print(exception.message);
}
}
The content_type name is correct and there is no mistake in the spelling.
I tried a different code to get information about the space I'm trying to access and that works just fine:
Future<Space> getCurrentSpaceDetails() async {
try {
return await _contentfulClient.getSpaceDetails(
spaceid: Secrets.CONTENTFUL_SPACE_ID);
} on ContentfulError catch (error) {
throw ContentfulError(message: error.message);
}
}
with the output:
I/flutter ( 8486): Space {
I/flutter ( 8486): sys=SystemFields {
I/flutter ( 8486): id=5k4zwxslsof9,
I/flutter ( 8486): type=Space,
I/flutter ( 8486): },
I/flutter ( 8486): locales=[Locale {
I/flutter ( 8486): code=en-US,
I/flutter ( 8486): name=English (United States),
I/flutter ( 8486): isDefault=true,
I/flutter ( 8486): }],
I/flutter ( 8486): name=afro-quiz,
I/flutter ( 8486): }
So I don't think this has anything to do with the installation.
I am using the contentful_dart 0.0.5 dependency

Answer 1

So what I finally did was go to the content delivery API references for java:
https://www.contentful.com/developers/docs/references/content-delivery-api/#/reference/search-parameters/content-type/query-entries/console/java
where i followed the example to query entries by content type
I modified the url below to fit my use case:
/spaces/{space_id}/environments/{environment_id}/entries?access_token={access_token}&content_type={content_type}
Final result:
Future getAllCategories(String spaceId,
String accessToken, String contentTypeId) async {
try {
final response = await _contentfulClient.client.get(
'https://$_baseUrl/spaces/$spaceId/environments/$_baseEnvironment
/entries?access_token=$accessToken&content_type=$contentTypeId');
return response.body;
} catch (exception) {
print(exception.message);
}
}
This finally worked for me.