A collection of general tips to assist developers to conduct troubleshooting. Some FOLIO repositories also have specific notes.
- Other troubleshooting documents
- Keep system tools up-to-date
- Update git submodules
- Do development and operations as a regular user
- Launching Vagrant on Windows
- Missing certificate authority for Let’s Encrypt
Other troubleshooting documents
Keep system tools up-to-date
As explained in the FOLIO setup documentation, keeping the operating system and tools up-to-date will generally help to avoid issues.
Update git submodules
Some FOLIO repositories utilize “git submodules” for sections of common code. Some git clients do not handle this properly. See notes.
Do development and operations as a regular user
As usual, do all development and running as a regular user, not as root. Otherwise there will be strange behaviour, and various facilities and tools might not be available. For example, Postgres (including the embedded one) refuses to run as root.
Launching Vagrant on Windows
If launching Vagrant from a Windows Command Prompt, be sure to use Run As Administrator… when opening the Command Prompt itself (cmd.exe). If you are seeing the error “EPROTO: protocol error, symlink”, the likely cause is that Vagrant was not launched with administrator privileges. See issue STRIPES-344 for details.
Missing certificate authority for Let’s Encrypt
If you are using a version of the Oracle JDK prior to
then the Let’s Encrypt
certificate authority is not in the Java trust store
So it will not be possible to download components from the FOLIO Maven
repository. You will see error messages like:
Could not resolve dependencies for project org.folio:mod-users:jar:0.1-SNAPSHOT: Failed to collect dependencies at org.folio:domain-models-api-interfaces:jar:0.0.1-SNAPSHOT: Failed to read artifact descriptor for org.folio:domain-models-api-interfaces:jar:0.0.1-SNAPSHOT: Could not transfer artifact org.folio:domain-models-api-interfaces:pom:0.0.1-SNAPSHOT from/to folio-nexus (https://repository.folio.org/repository/maven-folio): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -> [Help 1]
The fix is just to replace your JDK with a sufficiently recent replacement. (Or you can use OpenJDK, which has supported Let’s Encrypt for longer.)