Werk #14772: Fix crash when deleting custom MIB in EC

Component Setup
Title Fix crash when deleting custom MIB in EC
Date Sep 22, 2022
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 2.1.0p13 2.2.0b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

Attempting to delete a MIB under "SNMP MIBs for trap translation" of the event console would fail and crash with the error TypeError (unsupported operand type(s) for +: 'PosixPath' and 'str')

This has been fixed.

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