It's weird you don't even read your own links...
Durham said that the failure of the FBI "to critically analyze information that ran counter to the narrative of a Trump/Russia collusive relationship throughout Crossfire Hurricane is extremely troublesome" and caused "severe reputational harm" to the bureau.
What is also weird is that you went to a wiki page about the report, instead of the report itself.
Conclusion Based on the review of Crossfire Hurricane and related intelligence activities, we conclude that the Department and the FBI failed to uphold their important mission of strict fidelity to the law in connection with certain events and activities described in this report. As noted, former FBI attorney Kevin Clinesmith committed a criminal offense by fabricating language in an email that was material to the FBI obtaining a FISA surveillance order. In other instances, FBI personnel working on that same FISA application displayed, at best, a cavalier attitude towards accuracy and completeness. FBI personnel also repeatedly disregarded important requirements when they continued to seek renewals of that FISA surveillance while acknowledging - both then and in hindsight - that they did not genuinely believe there was probable cause to believe that the target was knowingly engaged in clandestine intelligence 17 activities on behalf of a foreign power, or knowingly helping another person in such activities.43 And certain personnel disregarded significant exculpatory information that should have prompted investigative restraint and re-examination.44 Our investigation also revealed that senior FBI personnel displayed a serious lack of analytical rigor towards the information that they received, especially information received from politically affiliated persons and entities. This information in part triggered and sustained Crossfire Hurricane and contributed to the subsequent need for Special Counsel Mueller's investigation. In particular, there was significant reliance on investigative leads provided or funded (directly or indirectly) by Trump's political opponents. The Department did not adequately examine or question these materials and the motivations of those providing them, even when at about the same time the Director ofthe FBI and others learned of significant and potentially contrary intelligence. 45 In light of the foregoing, there is a continuing need for the FBI and the Department to recognize that lack of analytical rigor, apparent confirmation bias, and an over-willingness to rely on information from individuals connected to political opponents caused investigators to fail to adequately consider alternative hypotheses and to act without appropriate objectivity or restraint in pursuing allegations of collusion or conspiracy between a U.S. political campaign and a foreign power. Although recognizing that in hindsight much is clearer, much of this also seems to have been clear at the time. We therefore believe it is important to examine past conduct to identify shortcomings and improve how the government carries out its most sensitive functions. Section V discusses some of these issues more fully.