Raspberry Pi - Arduino IDE Library load failure

Development Tools IDE 1.x
1

I am using Arduino 1.8.11 on a Raspberry Pi 3B+ with Raspbian Buster. When trying to look for a library I get a message that loading is not possible. How can I get around it? In the messages I find this:

mario@Midgard:~/Arduino/IDE/arduino-1.8.11 $ ./arduino
Picked up JAVA_TOOL_OPTIONS:
Set log4j store directory /home/mario/.arduino15
2020-02-01T14:58:00.100Z INFO c.a.c.p.ContributionInstaller:305 [Timer-0] Start download and signature check of=[https://downloads.arduino.cc/packages/package_index.json]
2020-02-01T14:58:00.203Z INFO c.a.u.n.FileDownloaderCache:92 [Timer-0] Cache folder /home/mario/.arduino15/cache
2020-02-01T14:58:00.527Z INFO c.a.u.n.FileDownloaderCache:149 [Timer-0] Get file cached is expire true, exist false, info FileCached{eTag='null', lastETag='null', remoteURL='https://downloads.arduino.cc/packages/package_index.json', localPath='/home/mario/.arduino15/cache/downloads.arduino.cc/packages/package_index.json', md5='null', createdAt='2020-02-01T15:58:00.426', cacheControl=null}
2020-02-01T14:58:00.572Z INFO c.a.u.n.HttpConnectionManager:148 [Timer-0] Connect to https://downloads.arduino.cc/packages/package_index.json, method=HEAD, request id=858AEB98FBCD4F66
2020-02-01T14:58:00.953Z ERROR c.a.u.n.FileDownloader:199 [Timer-0] The request stop
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path validation failed: java.security.cert.CertPathValidatorException: signature check failed
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192) ~[?:1.8.0_232]
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1946) ~[?:1.8.0_232]

2

I also have this issue and the terminal returns the exact same thing as canis42. I have reinstalled the Arduino IDE (Linux ARM 32) and it still does not work. I am using an RPi 4 with Raspbian. Arduino IDE version is 1.8.11. When I Manage Libraries it returns "Error downloading https://downloads.arduino.cc/libraries/library_index.json". However I can search

I can still compile code and blink some LED's with Arduino R3 and NodeMCU ESP8266 but any project that requires a library is useless at this time because I cannot add new libraries.

3

I now tried with 1.8.10 and it works well. For me the problem is solved. 1.8.11 also was my first try to run the Arduino IDE on Raspberry.

4

I can reproduce the bug and have submitted a bug report:

As @canis42 said, use Arduino IDE 1.8.10 until Arduino IDE 1.8.12 is released with (hopefully) the bug fixed. You can download Arduino IDE 1.8.10 here:

5

Just installed 1.8.12 and can confirm the library and board manager updating process now works with no errors.

6

I'm glad to hear it's working now for you @Skiddz. Enjoy!