2245088 - Custom Boomi process failure with error message: 'Failed initializing store file; Caused by: directory /boomilocaldisk/... is not readable'

 -> Custom Boomi process modified by the customer and re-deployed which resulted in below error message- 

"Severe errors occurred during start shape execution, terminating process.; Caused by: Failed initializing store file; Caused by: directory /boomilocaldisk/boomi/accounts/<account id>/data/YYYY.MM.DD is not readable"

-> And the process execution after that failed one is hung in Boomi i.e. it is in status 'In Process' even after 12hrs of execution.

KBA , LOD-SF-INT-BOM , Standard SF to 3rd Party Boomi Content , Problem