colmap error

[gvbgeomatics]

Encountered below error while preparing the dataset:

==== running: colmap exhaustive_matcher --SiftMatching.guided_matching=true --database_path colmap.db

==============================================================================
Exhaustive feature matching

Matching block [1/1, 1/1] in 0.890s
Elapsed time: 0.023 [minutes]
==== running: mkdir colmap_sparse
==== running: colmap mapper --database_path colmap.db --image_path "C:\nvidia-instant-ngp\instant-ngp\data\nerf\vivid-alast" --output_path colmap_sparse

==============================================================================
Loading database

Loading cameras... 1 in 0.000s
Loading matches... 0 in 0.000s
Loading images... 12 in 0.000s (connected 0)
Building correspondence graph... in 0.000s (ignored 0)

Elapsed time: 0.000 [minutes]

WARNING: No images with matches found in the database.

ERROR: failed to create sparse model
FATAL: command failed

I think this is the issue with colmap...did anyone encountered the same? any suggestions?