package "ngx-mask" has an incompatible peer dependency to "@angular/common"
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pyopenssl 20.0.0 has requirement cryptography>=3.2, but you'll have cryptography 2.8 which is incompatible.
ackage libpng12-dev is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'libpng12-dev' has no installation candidate