err on the side of
US /ɜːr ɑn ðə saɪd əv/
UK /ɜːr ɑn ðə saɪd əv/

1.
pecar de, decantarse por
to choose to do something that is safer or more cautious, rather than taking a risk
:
•
When in doubt, it's always better to err on the side of caution.
En caso de duda, siempre es mejor pecar de precavido.
•
The judge decided to err on the side of leniency, given the defendant's clean record.
El juez decidió pecar de indulgente, dado el historial limpio del acusado.