unable to locate adb in android studio 3.1.4

Bug:42098 - ' dev-db/dbf2mysql: XBase File to MySQL conversion and vice versa.' status:CONFIRMED resolution: severity:normal.Bug:41858 - ' Ebuild for gCAD3D' status:CONFIRMED resolution: severity:normal.Bug:41601 - ' clex-4.0_beta4.ebuild (New Package)' status:CONFIRMED resolution: severity:normal.Bug:41539 - ' ebuild for pport (new package)' status:CONFIRMED resolution: severity:normal.Bug:40560 - ' sci-geosciences/thuban-1.0.0 (new ebuild)' status:CONFIRMED resolution: severity:normal.Bug:40336 - ' pyfort-8.3.ebuild (New Package)' status:CONFIRMED resolution: severity:normal.`emerge undo`.' status:CONFIRMED resolution: severity:enhancement Bug:40127 - ' Third-Party Tool Request - Checkpointing and restoring packages states, e.g.

Bug:40023 - ' media-plugins/gimp-gap Gimp Animation Package' status:CONFIRMED resolution: severity:enhancement.Bug:39457 - ' pyrxp-0.9.ebuild (New Package)' status:CONFIRMED resolution: severity:normal.

Bug:38858 - ' seq-gen: Sequence-Generator simulation of DNA sequence evolution along phylogenetic trees' status:CONFIRMED resolution: severity:normal.

Bug:30095 - ' revdep-rebuild wants to rebuild package providing lib' status:CONFIRMED resolution: severity:normal.

Bug:21527 - ' net-misc/ntp: ntp-client init.d: default to `sntp` instead of `ntpdate`' status:CONFIRMED resolution: severity:enhancement.

Bug:21509 - ' Ability to cleanly stop emerging multiple packages after the current jobs complete.' status:CONFIRMED resolution: severity:normal.

Bug:10735 - ' sys-apps/portage or app-portage/gentoolkit - Feature request: Show dependencies in detail clarifying whether they are DEPEND, RDEPEND or PDEPEND as well as whether they are optional.' status:CONFIRMED resolution: severity:enhancement.

Bug:4315 - ' add support for version ranges in DEPEND' status:CONFIRMED resolution: severity:enhancement.

Unable to locate adb in android studio 3.1.4