added check for the existence of files
added check for the existence of files
Revert "added check for the existence of files"

This reverts commit b6d1e6608886c9dec0da1d836a7e5e3cc28988a1.
Revert "Revert "added check for the existence of files""

This reverts commit 21f02df42b996e6dc0c83765e12c5567b036b4b2.
Revert "Revert "Revert "added check for the existence of files"""

This reverts commit 3694c89b19af01ef698e08fe8755d1a2cea732f4.
Revert "Revert "Revert "Revert "added check for the existence of files""""

This reverts commit 386547d7b6f3347ef84b96ddb135b4ba68ae0ac6.
Revert "Revert "Revert "Revert "Revert "added check for the existence of files"""""

This reverts commit 5e46d57d38b670611aa16d127539786bbc048d6d.