err on the side of

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