Fixes fatal error while reading config file of the integration #5607

Job	Run time
WP 5.8.x, multisite: no, JP: yes, PHP: 7.4	7m 55s
WP 5.9.x, multisite: no, JP: yes, PHP: 7.4	8m 17s
WP 6.0.x, multisite: no, JP: yes, PHP: 7.4	9m 37s
WP 6.1.x, multisite: no, JP: yes, PHP: 7.4	8m 15s
WP latest, multisite: no, JP: yes, PHP: 7.4	8m 21s
WP nightly, multisite: no, JP: yes, PHP: 7.4	9m 59s
WP latest, multisite: yes, JP: yes, PHP: 7.4	8m 38s
WP nightly, multisite: yes, JP: yes, PHP: 7.4	8m 51s
WP latest, multisite: no, JP: no, PHP: 7.4	7m 43s
WP latest, multisite: yes, JP: no, PHP: 7.4	7m 43s
WP 6.2.x, multisite: no, JP: yes, PHP: 8.0	8m 21s
WP 6.2.x, multisite: yes, JP: yes, PHP: 8.0	10m 34s
WP latest, multisite: no, JP: yes, PHP: 8.0	15m 32s
WP latest, multisite: yes, JP: yes, PHP: 8.0	13m 15s
WP nightly, multisite: no, JP: yes, PHP: 8.0	8m 22s
WP nightly, multisite: yes, JP: yes, PHP: 8.0	10m 55s
WP latest, multisite: no, JP: yes, PHP: 8.1	8m 42s
WP latest, multisite: yes, JP: yes, PHP: 8.1	8m 54s
WP nightly, multisite: no, JP: yes, PHP: 8.2	8m 18s
WP nightly, multisite: yes, JP: yes, PHP: 8.2	8m 49s
WP nightly, multisite: no, JP: yes, PHP: 8.3	9m 11s
WP nightly, multisite: yes, JP: yes, PHP: 8.3	9m 16s
	3h 25m 28s

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