Previous implementation uses the incorrect lsp result fields for
generating call site locations resulting in incomplete and incorrect
results.
(cherry picked from commit 8cd58c6e81)
This commit fixes a bug that lead to an error because we tried to
concatenate a table (`err`) to a string. Now we concatenate
`err.message` (a string) to the string.
(cherry picked from commit 2e05e63cdf)
