FALL RIVER — Berta’s Restaurant, Tapas & Bar, with its dual dining rooms and entrances at 201 and 195 South Main St., served its last meal and bar drink this past Saturday night. Joe Pereira and partner and companion Berta Cunha in February 2019 opened their “European-style” eatery — filling a four-year void after the departure of Trio Café & Lounge — and are now shifting their entrepreneurial focus to East Providence. They said they’ve closed on a deal to buy the Red Bridge Tavern restaurant and bar and its building at 22 Waterman Ave., which also includes an attached three-story apartment house. Cunha and Pereira, who live in Cranston, said they had their share of loyal Fall River customers but that Rhode Islanders accounted for as much as 70 percent of their clientele.