We are getting below error while applying the patch 18911810

ERROR: I/O or zip error while attempting to read entry README_bc4jct.txt in zip file /intb/app02/common/intbcomn/java/classes

    Error(s) have occurred; exiting with status 1

AutoPatch error:
ERROR [code=1] Running adjcopy.class


AutoPatch error:
Error updating master archive


An error occurred while Updating Oracle Applications Java files if necessary.
Continue as if it were successful [No] : No
Freeing includes hash table
Freeing fixes hash table
Freeing basedons hash table
Freeing entities hash table

You should check the file
/intb/app02/appl/intbappl/admin/INTB/log/INTB_u18911810.drv_Neel.log

for errors.