``batch['text']`` adds ``[self.mapping_task[task_name]]`` twice

[lighten001]

function log_images will call get_input (which is the second time be called) on train batch end

z, c = self.get_input(batch, self.first_stage_key, bs=N)

so batch['text'] will add [self.mapping_task[task_name]] twice

batch['txt'] = batch['txt'] + [self.mapping_task[task_name]]

the c_task should be c_all[BS:BS+1,:1,:] to avoid the two same task prompt

[salesforce-cla[bot]]

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