catch and log error

[ionox0]

use logger for this error and set to level=ERROR:

	string index out of range
	string index out of range
	string index out of range
	string index out of range
	string index out of range
	string index out of range
	string index out of range
	string index out of range
	string index out of range
	string index out of range
	string index out of range

[rhshah]

Saw similar for the single ch sample run. Just FYI