Error: export 'toValue' (imported as 'toValue') was not found in 'vue-demi'

[roberttolton]

Am trying to upgrade a legacy project, and I am hitting the following error:

export 'toValue' (imported as 'toValue') was not found in 'vue-demi'

I cannot find toValue anywhere within the vue-demi project, so why is VueFire trying to import it?

[posva]

You need to update your Vue version: 2.7 or 3.3