Werk #7834: liebert*: Do not crash if value could not be converted to float
| Component | Checks & agents |
| Title | liebert*: Do not crash if value could not be converted to float |
| Date | Jun 17, 2019 |
| Checkmk Edition | Checkmk Raw (CRE) |
| Checkmk Version | 1.5.0p19 1.6.0b3 2.0.0i1 |
| Level | Trivial Change |
| Class | Bug Fix |
| Compatibility | Compatible - no manual interaction needed |
