Problem with multisite in wp4.3

What other plugins do you use?

YoastSEO, WP Smush, Recent Post Widget Extended, Multisite Category, Multisite Clone. Jetpack, BackupWP, Akismet.
These are plugins installed in the network.
If I active the CF7 for each blog into my network that’s ok, but if i check active on the network i’ve got those errors.

Try deactivating Recent Posts Widget Extended first.

Is not a problem of CF7 plugin.
Now I have activate the DEUBG option and then deactivate all plugins and all sites. Anyway the deprecate error persists.

Before i’ve done a similar test:
Deactivate all plugin and activate one for time and CF7 give me the errors. But maybe was a fortuity.

FYR https://gist.github.com/chriscct7/d7d077afb01011b1839d

….wp-contact-form-7.php on line 75 とでます。WP 4.3 にアップしてログアウトもできません。75をみても空欄なのです。
ダッシュボード、私のHP https://www.theforestree.com もすべてこのメッセージです。75 行目をどうしたらよいでしょうか？よろしくお願いいたします。私はど素人です。