failed to parse

im very new at this. i followed some tutorials, i did everything the tutorials said to do, spyglass says theres no error but the datapack fails with
Errors in element park_dim:sniff_fl_azalea_small:
java.lang.IllegalStateException: Failed to parse park_dim:worldgen/structure_set/sniff_fl_azalea_small.json from pack file/Conservationcraft_test
but i dont understand why.