Nikon D7000 has a manual aperture adjustment in M range, and the focus is successful. Why can't it release the shutter?

Does lz have a screenshot? Without specific parameter settings and screenshots, it is difficult to judge what the situation is. Common situations in which the shutter cannot be released are: 1, the lens is too close; 2, the light is dark; 3. The flashing pops up, but the flashing is not synchronous; 4. The shutter setting is too slow, which does not mean that the shutter cannot be released. Lz check it, and then change the parameter settings and shooting environment.