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Two large movie theater owners issued dire warnings on Wednesday about their ability to bounce back from the coronavirus.

AMC, the nation’s biggest cinema chain, said in a regulatory filing that there’s a “substantial doubt” about its ability to “continue as a going concern for a reasonable period of time.” Companies issue “going concern” warnings when running low on cash and AMC has been dogged by persistent rumors of bankruptcy since it was forced to shutter 630 theaters across the nation in March.