This topic describes only module-specific error codes. For details about universal error codes, see Universal Error Codes.
103801 Failed to Generate a Key Value for ForEach
Error Message
use of default id generator function not possible on provided data structure.Need to specify id generator function (ForEach 3rd parameter).Application Error!
Description
This error code is reported when the default key value generation function of ForEach cannot generate key values based on the provided data structure.
Possible Causes
The data source you provide cannot generate key values. For example, the data item type is not supported by the key value generation function.
Solution
Modify the data source object or manually implement a key value generation function. For details, see Key Generation Rules.
103802 Failed to Render the Subnode
Error Message
lacks mandatory '.each' attribute function, i.e. has no default item builder. Application error!
Description
This error code is reported when the each attribute is missing.
Possible Causes
You do not set the each attribute when using the Repeat component, causing the component to lack the default child node builder function.
Solution
Set each to provide the default child node builder function.
103803 Invalid Index Value
Error Message
__RepeatVirtualScrollImpl (eg:1) onCreateNode: for index=(eg:7) with data array length (eg:5), totalCount= (eg:5) out of range error.
Description
This error code is reported when the node index is greater than or equal to the length of the data source.
Possible Causes
The length of the data source is set incorrectly, or the data source is added or deleted during node creation.
Solution
Set the index and data source length correctly to ensure that the index is not greater than or equal to the data source length. Avoid adding or deleting data sources during node creation.
103804 Invalid Operation During Lazy Loading of Repeat
Error Message
onLazyLoading function executed illegal operation.
Description
This error code is reported when invalid data operations are performed in the lazy loading scenario.
Possible Causes
You call a data operation method without following the data operation constraints of the lazy loading API.
Solution
Call the method by following the data operation constraints of the lazy loading API. For details, see Precise Lazy Loading.
103805 Failed to Generate the Default Key Value
Error Message
Repeat(). Default key gen failed. Application Error!
Description
This error code is reported when the default key value of Repeat fails to be generated.
Possible Causes
The data source you set cannot generate a unique key value.
Solution
Modify the data source so that it can generate a unique key value, or manually implement a key-value generation function. For details, see Key Generation Rules.