bower install cachable-ajax --save
Unable to find a suitable version for polymer, please choose one:
1) polymer#^0.4.0 which resolved to 0.4.2 and is required by cachable-ajax#0.3.1, core-ajax#0.4.2, core-component-page#0.4.2, core-localstorage#0.4.2
2) polymer#~0.5.5 which resolved to 0.5.5 and is required by polymer-bare
3) polymer#^0.5.0 which resolved to 0.5.5 and is required by core-field#0.5.0
4) polymer#^0.5 which resolved to 0.5.5 and is required by core-component-page#0.5.5
"dependencies": {
"polymer": "Polymer/polymer#~0.5.5",
"app-router": "~2.4.0",
"core-elements": "Polymer/core-elements#~0.5.5"
}
Thank you.