Suppress traceback and log error

[fabaff]

Description:

Suppress traceback and log error.

Related issue (if applicable): fixes #16662

Example entry for configuration.yaml (if applicable):

sensor:
  - platform: scrape
    resource: http://www.bom.gov.au/sa/forecasts/adelaide.shtml
    name: Chance of Rain
    select: '.pop'
    value_template: '{{ value.split("%")[0] | round(2) }}'
    unit_of_measurement: '%'

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass