I encountered a similar problem yesterday. After retraining, the problem still exists. Can you see if this problem is caused by the same reason?
build output:
..\model-parameters/model_variables.h(102): error: field designator 'output_tensors_indices' does not refer to any field in type 'ei_learning_block_config_tflite_graph_t'
.output_tensors_indices = ei_output_tensors_indices_25,
^
..\model-parameters/model_variables.h(103): error: field designator 'output_tensors_size' does not refer to any field in type 'ei_learning_block_config_tflite_graph_t'
.output_tensors_size = ei_output_tensors_size_25,
^
..\model-parameters/model_variables.h(115): error: type 'EI_IMPULSE_ERROR (*)(const ei_impulse_t *, ei_feature_t *, std::uint32_t, std::uint32_t *, std::uint32_t, ei_impulse_result_t *, void *, bool)' (aka 'EI_IMPULSE_ERROR (*)(const ei_impulse *, ei_feature_t *, unsigned int, unsigned int *, unsigned int, ei_impulse_result_t *, void *, bool)') cannot be narrowed to 'bool' in initializer list [-Wc++11-narrowing]
&run_nn_inference,
^~~~~~~~~~~~~~~~~
..\model-parameters/model_variables.h(115): note: insert an explicit cast to silence this issue
&run_nn_inference,
^~~~~~~~~~~~~~~~~
static_cast<bool>( )
..\model-parameters/model_variables.h(116): error: cannot initialize a member subobject of type 'EI_IMPULSE_ERROR (*)(const ei_impulse *, ei_feature_t *, std::uint32_t, std::uint32_t *, std::uint32_t, ei_impulse_result_t *, void *, bool)' (aka 'EI_IMPULSE_ERROR (*)(const ei_impulse *, ei_feature_t *, unsigned int, unsigned int *, unsigned int, ei_impulse_result_t *, void *, bool)') with an rvalue of type 'void *'
(void*)&ei_learning_block_config_25,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
..\model-parameters/model_variables.h(118): error: cannot initialize a member subobject of type 'int' with an lvalue of type 'const std::uint32_t [1]'
ei_learning_block_25_inputs,
^~~~~~~~~~~~~~~~~~~~~~~~~~~
..\model-parameters/model_variables.h(119): error: cannot initialize a member subobject of type 'const std::uint32_t *' (aka 'const unsigned int *') with an lvalue of type 'const std::uint8_t' (aka 'const unsigned char')
ei_learning_block_25_inputs_size,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
..\model-parameters/model_variables.h(123): error: unknown type name 'ei_fill_result_classification_i8_config_t'
const ei_fill_result_classification_i8_config_t ei_fill_result_classification_i8_config_25 = {
^
..\model-parameters/model_variables.h(132): error: use of undeclared identifier 'EI_CLASSIFIER_MODE_CLASSIFICATION'
.type = EI_CLASSIFIER_MODE_CLASSIFICATION,
^
..\model-parameters/model_variables.h(135): error: use of undeclared identifier 'process_classification_i8'
.postprocess_fn = &process_classification_i8,
^
9 errors generated.