esp8266-board-on-arduino

after using preferances  i got this error \”CRC doesn\’t match, file is corrupted. It may be a temporary problem, please retry later. java.lang.RuntimeException: java.lang.Exception: CRC doesn\’t match, file is corrupted. It may be a temporary problem, please retry later. at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onInstallPressed$2(ContributionManagerUI.java:175) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.Exception: CRC doesn\’t match, file is corrupted. It may be a temporary problem, please retry later. at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:100) at cc.arduino.contributions.DownloadableContributionsDownloader.download(DownloadableContributionsDownloader.java:60) at cc.arduino.contributions.packages.ContributionInstaller.install(ContributionInstaller.java:113) at cc.arduino.contributions.packages.ui.ContributionManagerUI.lambda$onInstallPressed$2(ContributionManagerUI.java:172) … 1 more\”