Warning: get_headers(): SSL operation failed with code 1. OpenSSL Error messages:
error:0A000086:SSL routines::certificate verify failed in unigebook_iris() (line 257 of modules/custom/unigebook/unigebook.module).
Warning: get_headers(): Failed to enable crypto in unigebook_iris() (line 257 of modules/custom/unigebook/unigebook.module).
Warning: get_headers(https://rubrica.unige.it/personale/ricerca/UUBCUlhr): Failed to open stream: operation failed in unigebook_iris() (line 257 of modules/custom/unigebook/unigebook.module).
Warning: Trying to access array offset on false in unigebook_iris() (line 260 of modules/custom/unigebook/unigebook.module).
Deprecated function: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in unigebook_iris() (line 260 of modules/custom/unigebook/unigebook.module).
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